1.
Solve 18 +
a
= 36.
A.
-2
B.
-18
C.
54
D.
18
Hint
2.
Solve 7(2
k
+ 4) - (3
k
+ 1) = 49.
A.
2
B.
1.8
C.
1
D.
4
Hint
3.
The formula for the area of a trapezoid is
Solve the formula for
h
.
A.
B.
C.
D.
Hint
4.
Solve the equation
x
– 82 = 143
A.
-61
B.
61
C.
225
D.
Hint
5.
Solve the equation
A.
-1
B.
9
C.
D.
20
Hint