1.
Find the value of
r
in the following equation.
2 + 6
r
= 3
r
- 1
A.
2
B.
6
C.
D.
-1
Hint
2.
What is the solution of 2.5
a
+ 12 = 5
a
?
A.
24
B.
2.5
C.
30
D.
4.8
Hint
3.
If 3.2
z
- 6 = 1.8 + 11
z
, what is the value of
z
?
A.
-1
B.
1
C.
0
D.
-2
Hint
4.
Which equation has a solution of
x
= –4?
A.
6
x
+ 17 = 1 – 10
x
B.
1 – 10
x
= –17 + 6
x
C.
10
x
– 1.5 = –17.5 + 6
x
D.
6
x
+ 17 = –1 + 10
x
Hint
5.
Which equation has a solution of
x
= 7?
A.
–7 + 8
x
= –11
x
+ 14
B.
11 + 7
x
= –14
x
– 8
C.
11
x
– 7= 14 – 8
x
D.
7 – 11
x
= –8
x
– 14
Hint