Hi everyone, my name is Emerson. I was wondering if anybody could help me on a test. I'm stuck on some, but I think I know some others. Thank you!
1. Translate the phrase "nine more than two times a number" in to an algebraic expression.
A. 9x + 2
B. 2x + 9
C. 9x - 2
D. 2x - 9
Could it be "B"?
2. Evaluate the expression 3m - 5 when m = 7.
A. 2
B. 16
C. 21
D. 28
Could it be "B"?
3. Simplify 4x + 8y - 3x + 2 y.
A. 12x - y
B. 22x + y
C. 6x + 5y
D. x + 10y
I’m not sure about this one.
4. Factor 24p + 64.
A. 24(p + 40)
B. 12(2p + 5)
C. 8(3p + 8)
D. 3(8p + 21)
Could it be “C”?
5. m + 8 = 22
A. -30
B. 14
C. -14
D. 30
Could it be “B”?
6. W – 8 = -12
A. -20
B. -4
C. 4
D. 20
Could it be “B”?
7. 3q = 12
A. 4
B. 9
C. 15
D. 36
Could it be “A”?
8. q/6 = 24
A. 4
B. 8
C. 30
D. 144
Could it be “D”?
9. 3b – 9 = 15
A. 8
B. 6
C. 2
D. -2
Could it be “A”?
10. y/5 + 10 = -15
A. -125
B. -25
C. -5
D. -1
Could it be “A”?
11. -3(4 – a) = 6
A. -6
B. -2
C. 2
D. 6
Could it be “D”?
12. 5(x + 6) = 45
A. 15
B. 3
C. -3
D. -15
Could it be “B”?
13. Brandon is bringing bottled water to a picnic. He has 4 full cases of bottles of water, and a bag with 8 more bottles. He has a total of 104 bottles of water. Write and solve an equation to find the number of bottles in each case.
A. x/4 + 8 = 104; x = 384
B. x/4 – 8 = 104; x = 448
C. 4x + 8 = 104; x = 24
D. 4x – 8 = 104; x = 28
I’m not sure about this one.
14. Which is a solution of h > -6?
A. -10
B. -8
C. -6
D. -4
Could it be “D”?
15. z – 4 > 9
A z > -13
B z > -8
C z > 5
D z > 13
I’m not sure about this one.
16. q + 7 less than/equal to – 15
A. q less than/equal to -22
B. q less than/equal to -8
C. q less than/equal to 8
D. q less than/equal to 15
I’m not sure about this one.
17. -3y > 9
A. y < 3
B. y > 3
C. y < -3
D. y > -3
I’m not sure about this one.
18. k/5 greater than/equal to -4
A. k greater than/equal to -20
B. k less than/equal to -20
C. k greater than/equal to 20
D. k less than/equal to 20
I’m not sure about this one.
19. 4g – 8 < 20
A. g > 3
B. g < 3
C. g > 7
D. g < 7
I'm not sure about this one.
20. v/-2 + 12 less than/equal to 8
A. v greater than/equal to 8
B. v less than/equal to 8
C. v greater than/equal to -8
D. v less than/equal to -8
I’m not sure about this one.
Thanks!
29 answers
4x + 8y - 3x + 2 y
= 4x - 3x + 8y + 2y
= x + 10y
the others from #1 to #12 are correct
#13
let number of bottles in a case be x
so you have 4x + 8 bottole
4x+8 = 104
4x = 96
x = 24
#14 , ok
#15
z – 4 > 9
add 4 to both sides
z > 13
#16
q + 7 ≤ – 15 , subtract 7 from both sides
q ≤ -22
#17
-3y > 9 , divide by -3, so you MUST reverse the inequality sign
y < -3
#18
k/5 ≥ -4 , multiply both sides by +5
k ≥ -20
#19
4g – 8 < 20
4g < 28
g < 7
#20
v/-2 + 12 ≤ 8 , subtract 12
v/-2 ≤ -4 , multiply by -2, reverse inequality sign
v ≥ 8
For the most part, when working with inequalities, pretend they are equations and perform the same steps, EXCEPT when multiplying or dividing by a negative, you must reverse the inequality sign.
This is usually your last step
2B
3D
4C
5B
6B
7A
8D
9A
10A
11D
12B
13C
14B
15C
16D
17A
18C
19A
20D
21A
2.B
3.D
4.C
5.B
6.B
7.A
8.D
9.A
10.A
11.D
12.B
13.C
14.D
15.C
16.D
17.A
18.C
19.A
20.D
21.A
2.B
3.D
4.C
5.B
6.B
7.A
8.D
9.A
10.A
11.D
12.B
13.C
14.D
15.C
16.D
17.A
18.C
19.A
20.D
21.A (Eliza is Correct to)
B
D
C
B
B
A
D
A
A
D
B
C
D
C
D
A
C
A
D
A
100% hope this helps
3 answers