1.
Find the value of
r
in the following equation.
2 + 6
r
= 3
r
- 1
A.
6
B.
C.
-1
D.
2
Hint
2.
What is the solution of 2.5
a
+ 12 = 5
a
?
A.
4.8
B.
24
C.
2.5
D.
30
Hint
3.
Determine the solution of
A.
-10
B.
C.
D.
-20
Hint
4.
Solve the equation for
r
.
7
r
+ 6 = 4
r
– 9
A.
r
= –3
B.
r
= 2
C.
r
= 6
D.
r
= –5
Hint
5.
Which equation has a solution of
x
= 7?
A.
11 + 7
x
= –14
x
– 8
B.
11
x
– 7= 14 – 8
x
C.
7 – 11
x
= –8
x
– 14
D.
–7 + 8
x
= –11
x
+ 14
Hint