1.
Write an algebraic expression to represent ''the sum of 6 and three times a number squared.''
A.
6 + 3
x
B.
6 + 3
x
2
C.
6(3
x
)
D.
6(3
x
)
2
Hint
2.
Name the property illustrated by the statement below.
If 5
n
= 15, then 15 = 5
n
.
A.
reflexive property of equality
B.
transitive property of equality
C.
substitution property of equality
D.
symmetric property of equality
Hint
3.
Solve 7(2
k
+ 4) - (3
k
+ 1) = 49.
A.
4
B.
1.8
C.
1
D.
2
Hint
4.
The formula for the area of a trapezoid is
Solve the formula for
h
.
A.
B.
C.
D.
Hint
5.
Name the property of equality illustrated by the following statement. If
n
– 3 = 5 + 4, then
n
– 3 = 9.
A.
Substitution
B.
Transitive
C.
Symmetric
D.
Reflexive
Hint