Question

1) -5g-6 for g=-2

A) 4
B)16
C)10
D)-13
2) Write an algebraic expression for the sum of 3 coins and c coins
A) c+3
B)c/3
C)3c
D)c-3
3) x-2=16
A)14
B)18
C)21
D)12
4) z/-12=-5
A)7
B)-60
C)-17
D)60
5) Estimate the solution of the equation x-8.1=5.3 to the nearest whole number
A) about 13
B)about 14
C)about 4
D) about 3
6) 14=t-44
A)-30
B)-58
C)30
D)58
7) -30=j+50
A)80
B)20
C) -1500
D)-80
8)2.8x=-9.24
A)12.04
B)-0.3030
C)-3.3
D)-12.04
9)5.8=z/2.2
A)127.6
B)0.37
C)3.7
D)12.76

Answer 1

1) A

2) A

3) B

4) D

5)A

6) D

7) A

8) C

9) D

Explanation:

1) -5 (-2) -6= 4

2) 3 coins plus c coins = 3 + c

3) x-2 =16, x = 18

4)
`(z)/(-12)` =-5. Clearing, z = 60

5) x =13,4

6) 14=t-4. Clearing t = 58

7) -30=j+50, clearing j=80

8) 2.8x=-9.24, clearing x=-3-3

9) 5.8=
`(z)/(2.2)`. Clearing z=12.76