1. –(6)–1
(1 pt) -1/6
2. (–7.4)0
(1 pt) 1
3. –1 over y^–4
(1 pt) –y4
4. 63 × 610
(1 pt) 613
5. Simplify this expression. (3)10(3)–9
(1 pt) 3
6. (q9)2
(1 pt) q18
7. (6q6)–4
(1 pt) 1/1,296q^24
8. What is the value of 11 x superscript negative 3 baseline y superscript negative 1 baseline for x equals negative 1 and y = 2?
1 pt) -11/2
9. (t–4)–9t2
(1 pt) t38
10. (2/5n^9)^2 (1 point)
(1 pt) 4/25n^18
11. Determine if the number is written in scientific notation. If not, explain 2.01 x 10-5.
(1 pt) Yes; the number is written in scientific notation.
12. What is the order of 1.5 × 103, 1.4 × 10–1, 2 × 103, and 1.4 × 10–2 from least to greatest?
(1 pt) 1.4 × 10^–2, 1.4 × 10–1, 1.5 × 103, 2 × 103
13. Find the simplified form of the expression. Give your answer in scientific notation. (3 × 106)(8 × 10–4)
(1 pt) 2.4 × 103
14. Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 × 10^12 miles. Suppose a star is 9.8 × 10^1 light-years from Earth. In scientific notation, approximately how many miles is it?
(1 pt) 5.76 × 1014 miles
15. A dinosaur fossil is 92,170,000 years old. How can you express this age in scientific notation with the highest level of precision?
(1 pt) 9.217x10 ^7 baseline
16. Radio signals travel at a rate of 3 × 10^8 meters per second. How many seconds would it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 4.2 × 10^7 meters?
(1 pt) 1.4 × 10–1 seconds
17. Does the table represent an exponential function?
x 1 2 3 4
y 4 16 64 256
(1 pt) yes
18. Does the rule y = –3x5 represent an exponential function? (1 point)
(1 pt) no
19. Choose the correct graph of the function y=-8(2*).
(1 pt) A
20. Choose the correct graph of the function y=1/5(3*)
(1 pt) B
21. In an appropriate environment, guppies reproduce at an astounding rate. A population of breeding guppies doubles every 2 months. How many guppies will there be after 6 months if the beginning population is 180 guppies?
(1 pt) 1,440 guppies
22. The amount of algae in a fish tank doubles every day. Initially, the tank has 20 grams of algae in it so that the function y=20(2*) models the amount of algae in the bowl after x days. Which graph represents this function?
(1 pt) D
23. A $4,000.00 principal earns 5% interest, compounded annually. After 4 years, what is the balance in the account?
(1 pt) $4,862.03
24. A boat costs $92,000.00 and depreciates in value by 15% per year. How much will the boat be worth after 10 years?
(1 pt) $18,112.45
1. –(6)–1
6
1/6
-1/6
–6
6 answers
–(6)–1
= -6 - 1 = -7
none of the choices are correct.
If you meant
-(6)(-1) , then it would be -6
= -6 - 1 = -7
none of the choices are correct.
If you meant
-(6)(-1) , then it would be -6
I think you need to use ^ for exponents, to make hings clear. What you typed is very hard to interpret.
(-6)^-1 = 1/(-6) = -1/6
(t^-4)^-9 * t^2 = t^38
(-6)^-1 = 1/(-6) = -1/6
(t^-4)^-9 * t^2 = t^38
1A
2A
3A
4A
5A
6B
7C
8A
9B
10C
11A
12A
13B
14D
15B
16B
17A
18B
19??
20??
21A
22??
23B
24B
this will give you a 87 it's not perfect but adleast you pass... sorry
2A
3A
4A
5A
6B
7C
8A
9B
10C
11A
12A
13B
14D
15B
16B
17A
18B
19??
20??
21A
22??
23B
24B
this will give you a 87 it's not perfect but adleast you pass... sorry
thank you
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