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