1.
Suppose you need to solve the equation 3 = 2(5
x
+ 1). What is a logical first step in solving this equation?
A.
Use the Distributive Property.
B.
Use the Subtraction Property of Equality.
C.
Use the Substitution Property of Equality.
D.
Use the Addition Property of Equality.
Hint
2.
Solve the equation 4(3
a
- 1) = -28.
A.
B.
-2
C.
2
D.
Hint
3.
The formula for the area of a triangle is
A
=
where
b
is the
length of the base and
h
is the height. The area of a particular triangle
is 39 square feet. The length of the base is (4
a
+ 2) feet and the
height is 3 feet. What is the value of
a
?
A.
6.5
B.
3
C.
6
D.
1.5
Hint
4.
Solve the equation 5 + 7(
n
– 3) = -2.
A.
n
=
B.
n
=
C.
n
= 2
D.
n
= -3
Hint
5.
Solve the equation 3(
z
– 2) + 4(
z
+ 2) =
z
.
A.
z
= -1
B.
z
=
C.
no solution
D.
z
= 0
Hint