Question

some investments in the stock market have earned 10% annually. At this rate, earning can be found using the formula A=p(1.10)n, where A is the total value of the investment, P is the initial value of the investment, and n is the number of years the money is invested. If $1,5oo is invested in the stock market at this annual rate of return, what is the expected total value after 18 years?

A.) $29,700.00
B.) $28,050.00
C.) $8,339.88
D.) $7,581.71

I need some help on this one, I cant figure it out. I would say what I think it is, but I don't even have a good guess.

Answer 1

just plug in 1500 for p, and 18 for n:

1500(1.10)^18 = 8339.88

Answer 2

Thank you so much Steve.

Answer 3

every time i come onto this damn site and the entire answer key to the test ISNT listed, a year is taken off my life.

Answer 4

for people in the future: answer was $5,559

Answer 5

all 11 test answers: (Exponential and Logarithmic Functions Unit Test Part 1)

1. C
2. B
3. C
4. B
5. D
6. D
7. C
8. A
9. A
10. A
11. "the value of K will raise or lower the entire graph of the function by k units"

:)

Answer 6

Jay is wrong got a 4 out of 11

Answer 7

So whats the right answers??

Answer 8

1B
2B
3A
4C
5C
6B
7D
8B
9B
10A
11D
12A

Answer 9

who is wrong I got 5/11
1. B

Answer 10

1.B
2.C
3.B
4.C
5.C
6.B
7.B
8.D
9.A
10.B
11.A
12.A

Answer 11

None of the people who have listed their answers are correct

Answer 12

B
C
A
B
B 1/2
B.3797
D
A 4% decay
A 1.07
B
K is the vertical shift. since it is positive. Will move the graph up k units

Answer 13

Hi I'm abt to give y'all all the answers lol
I will say, GET MATHWAY. It SLAPS and it's 100% worth it.
1. -1 graph, C (it's below the x line)
2. 8,339.88, probably C
3. Line's on the 3, B
4. ½ logb 29 - ½, you get the gist it's C
5. ½, it's B
6. 0.3375, C
7. 997/2, D
8. 1%: exponential decay, B
9. 0.949, D
10. Logb (y^5x^6), D
11. I think it's vertical? Idk don't quote me on this lol

Answer 14

1.) B
2.) B
3.) C
4.) B
5.) B
6.) C
7.) B
8.) C
9.) B
10.) B
Trust me. I swear these are all right!

Answer 15

1. which graph best represents y=2^x+1
-graph b
2. some investments.....
-c. 13,899.79
3. graph b
4.b. 1/2 logb57-1/2 logb74
5. b. 1/2
6. b. 0.3797
7. b. 998/3
8. b. 1% exponential decay
9. b. 0.9962
10. b. logb(y^5x^4)
11. the value of k will rise or lower the whole graph of the function by k units.
I got 9 out of 10 but i fixed the one i got wrong so you will get 100%

Answer 16

AYO GUYS LOKI IS RIGHT LOL I GOT 10/10!

Answer 17

1.B
2.C - 8,339.88
3.A
4.D - logb(29-61)
5.B - 1/2
6.D - 0.4340
7.B - 998/3
8.B - 1%;exponential decay
9.A - 1.0797
10.A - logb(y^4x^3)

Answer 18

4 is 1/2 logb29 - 1/2 logb61

Answer 19

y’all need to realize that everybody’s tests are different so therefore I don’t rely on the people who have already answered because they have different questions than you

Answer 20

this is depressing, you can’t even cheat on tests anymore🙄

Answer 21

you can use mathway for most of the test

Answer 22

BtS_eaTs_DogS is right

Answer 23

that username is racist bro, not cool

Answer 24

100% correct

Which graph best represents y = 4x + 1?
1. B

2. C. $13,899.79
3. C y = log(x – 4)
4. C logb sq 29/61
5. D 1/2
7. B 0.3705
8. C 999/2
9. B. 1% expon. decay
10. D 0.949

Answer 25

ong i wish i did irl

Answer 26

right like connexus is unnecessarily stressful

Answer 27

i took a chance on yall wtf
anyway
7.8 connexus part 1 answers are
b
b
a
c
b
d
c
c
d
b
and then it's open ended for 11

Answer 28

C
B
B
B
D
C
B
C
D
B

Answer 29

1. Graph b
2. 8,339.88
3. 13.3
4. Graph a
5. 1/2logb13-1/2logb73
6.1/2
7. 0.3375
8. 998/3
9. 0.0050
10. 4% exponential decay
11. 1.0797
12. logb(y5x6)

Answer 30

y=4^x -1 this answer goes through 0,0
13,899.79
4.3 x 10^14 13.4
log(x-2) goes through( 3,0)
1/2logb 57- 1/2logb 74
log64(8) 1/2
.3375
(3x+2)=3 998/3
.0050
(.96)^x 4% exponential decay
1.0797
logb(y5 x6)

Answer 31

bruh i bombed that test no cap

Answer 32

7.8.1 test exponential and logarithmic functions
1.b (line curves to the left at the point (1,1))
2.c(13,899.79)
3.a(line curves on (2,-1)and (3,0) to the right)(sorry if that don't make sense best i can explain it)
4.a(1/2log_b(13-1/2) log_b(73))
5.b(1/2)
6.d(0.4340)
7.c(999/2)
8.a(4%; exponential decay)
9.d(0.949)
10.d(log_b(y^5x^6))
11. type an answer

These are the answers the I got at the end of the test and I failed:(
by listening to all these people but my fault so i typed the answers out to help don't please make sure your answer and the letter match up

Answer 33

7.8.1
1. B(line curves to the left at(1,1)
2.c (13,899.79)
3.a(line curves on (2,-1) and (3,0) to the right)(sorry if it isn’t clear the best I could explain)
4.a (1/2 log_b(13-1/2)log_b(73))
5.b(1/2)
6.d (0.4340)
7.c(999/2)
8.a(4%;exponential decay)
9.d(0.949)
10.d(log_b(y^5x^6)
11.type an answer

These are the answer given at the end of the test and I failed:( by listening to all these peeps but it my fault so I typed the answers out to help out, please make sure your answer and the letter match up

Answer 34

That’s was to the 7.8.1 test: exponential and logarithmic functions unit test by the way :p

Answer 35

1. Graph c
2. 5,559.92
3. Graph B
4. 1/2 logb57-1/2logb74
5. 1/2
6. 0.4234
7. 998/3
8. 4% decay
9. 1.0797
10. Logb(y5x6)
You’re welcome:)

Answer 36

1.b
2.c
3.c
4.c
5.b
6.c
7.d
8.c
9.d
10.b
11. short answer

Answer 37

THIS IS SO EMBARRASSING...
if u have alg 2 honors in connexus, here are the answers for exponential and logarithmic functions unit test part 1:

1.) which graph best represents y = 4^x - 1?

C, line crosses through zero

(questions like these are easy. just use a desmos calculator)

2.) some investments in the stock market have earned 10% annualy. the total value of the investment, A, at this rate can be found using a = p(1.10)^n, where P is the initial value of the investment, and n is the number of years the money is invested. if $1,000 is invested in the stock market at this annual rate of return, what is the expected value after 18 years​?

B, $5,559.92

3.) Graph the logarithmic function
y = log(x - 3)

B, line intersects x at 4

4.) Expand the logarithmic expression
logb sqr rt 57/74

B, 1/2logb 57 - 1/2logb 74

5.) What is the value of log64 8

B, 1/2

6.) Solve the exponential equation
125^(9x-2) = 150

C, 0.3375

7.) Solve log(2x+1) = 3

C, 999/2

8.) What is the percent rate of change in function y = (0.96)^x? Determine whether the function represents exponential growth or exponential decay.

A, 4%; exponential decay

9.) Use natural logarithms to solve the equation. Round to the nearest thousandth.
3e^2x + 4 = 24

D, 0.949

10.) Write the expression as a single logarithm.
4logb y + 3logb x

A, logb(y^4x^3)

100% right, i just took the test so you can trust me :P

Answer 38

This is the first part of the Connexus Algebra unit 7 lesson 8 unit test
1) which graph BEST represents y=4^x+1

- B or graph that goes up through +2

2) Some investments in the stock market have earned 10% annualy. the total value of the investment, A, at this rate can be found using a = p(1.10)^n, where P is the initial value of the investment, and n is the number of years the money is invested. if $1,000 is invested in the stock market at this annual rate of return, what is the expected value after 18 years​?

- B or 5,559.92

3) Graph the logarithm function y=log(x-2)

- A or graph that goes down -2 and goes through +3

4) Expand the logarithm expression logb sr29/61

- C or 1/2logb 29 - 1/2logb 61

5) What is the value of log42?

- D or 1/2

6) Solve the exponential expression 125^9x-2 =150

- C or 0.3375

7) Solve log(3x+2)=3

-B or 998/3

8) What is the percent rate of change in function y = (0.99)^x? Determine whether the function represents exponential growth or exponential decay.

- B or 1% exponential decay

9) Use natural logarithms to solve the equation. Round to the nearest thousandth. 3e^2x+2=28

-A or 1.0797

10) Write the expression as a single logarithm. 4logby+3logbx

- A or logb(y^4x^3)

11 is a written question -
The value of k can affect the graph by shifting it up or down. This all depends on if the value of k is negative or positive. If its positive, the graph would move up, if negative it would move down.
(if you use this plz rewrite it)
I RLY HOPE THIS HELPS :)) -moo

Answer 39

unit 7 lesson 8 Exponential and Logarithmic Functions Unit Test
but my questions and answers

1. which graph BEST represents y=4^x-1 ( this question you can put it desmos)
C. The graph goes through 0,0

2. some investments in the stock market have earned 10% annualy. the total value of the investment, A, at this rate can be found using a = p(1.10)^n, where P is the initial value of the investment, and n is the number of years the money is invested. if $2,500 is invested in the stock market at this annual rate of return, what is the expected value after 18 years​? (this question you just need a calculator)
C. 13,899.79 ( 2,500(1.10)^18 = 13,899.79

3. graph the logarithm function y=log(x-2) (desmos)
A. the line goes through 3,0

4. expand the logarithmic expression log b 57/74
B. 1/2 logb 57- 1/2 logb 74

5. what is the value of log base 64 of 8
B. 1/2

6. solve the exponential equation 125^7x-2=150
D. 0.4340

7. solve log(2x+1)=3
C. 999/2


8. determine whether the function represents exponential growth or exponential decay. identify the percent rate of change. y=(0.99)t
B. 1%

9. use natural logarithms to solve the equation. round to the nearest thousandth. 3e^2x +5=27
B. 0.996

10. write as a single logarithm
D. logb(y^5 x^6)

11. do it yourself

Answer 40

Algebra 2B: Exponential and Logarithmic Functions Unit Test - Part 1
(This is for On-level Algebra II, not Advanced Algebra II)

1. Which graph best represents y = 4^x -1?
Ans: C - The line goes through the graph's origin (0,0).

2. Some investments in the stock market have earned 10% annually. At this rate, earnings can be found using the formula A = P(1.10)^n, where A is the total value of the investment, P is the initial value of the investment, and n is the number of years the money is invested. If $1,500 is invested in the stock market at this annual rate of return, what is the expected total value after 18 years?
Ans: C - $8,339.88

3. The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H^+]. Use the formula pH = -log[H^+] to find the pH level, to the nearest tenth, of a liquid with [H^+] about 6.2 * 10^-14.
Ans: C - 13.2

4. Graph the logarithmic function. y = log(x-4)
Ans: C - The x-intercept of the line is 5.

5. Expand the logarithmic function. logb sqrt13/75
Ans: A - 1/2 logb13 -1/2 logb73

6. What is the value of log4 2?
Ans: D - 1/2

7. Solve the exponential equation. 125^8x-2 = 150
Ans: B - 0.3797

8. Solve log(2+3) = 3.
Ans: D - 997/2

9. Solve the equation. log(x+7) -logx = 3
Ans: C - 0.0070

10. What is the percent rate of change in function y = (0.98)^x? Determine whether the function represents exponential growth or exponential decay.
Ans: C - 2%; exponential decay

11. Use natural logarithms to solve the equation. Roud to the nearest thousandth. 3e^2x +4 = 24
Ans: D - 0.949

12. Write the expression as a single logarithm. 4logby +3logbx
Ans: A - logb(y^4 * x^3)


The final score is 12/12 (100%).