1.
Find the value of
r
in the following equation.
2 + 6
r
= 3
r
- 1
A.
B.
6
C.
-1
D.
2
Hint
2.
What is the solution of 2.5
a
+ 12 = 5
a
?
A.
2.5
B.
24
C.
30
D.
4.8
Hint
3.
Determine the solution of
A.
-20
B.
C.
-10
D.
Hint
4.
Solve the equation for
r
.
7
r
+ 6 = 4
r
– 9
A.
r
= 6
B.
r
= 2
C.
r
= –3
D.
r
= –5
Hint
5.
Which equation has a solution of
x
= –4?
A.
6
x
+ 17 = 1 – 10
x
B.
10
x
– 1.5 = –17.5 + 6
x
C.
6
x
+ 17 = –1 + 10
x
D.
1 – 10
x
= –17 + 6
x
Hint