1.
Solve
A.
13
B.
19
C.
D.
Hint
2.
Find the value of
r
in the following equation.
2 + 6
r
= 3
r
- 1
A.
-1
B.
2
C.
6
D.
Hint
3.
What is the solution of 2.5
a
+ 12 = 5
a
?
A.
4.8
B.
2.5
C.
30
D.
24
Hint
4.
If 3.2
z
- 6 = 1.8 + 11
z
, what is the value of
z
?
A.
0
B.
1
C.
-2
D.
-1
Hint
5.
Determine the solution of
A.
-20
B.
C.
-10
D.
Hint