1.
Write an algebraic expression to represent ''the sum of 6 and three times a number squared.''
A.
6 + 3
x
2
B.
6(3
x
)
2
C.
6 + 3
x
D.
6(3
x
)
Hint
2.
Name the property illustrated by the statement below.
If 5
n
= 15, then 15 = 5
n
.
A.
transitive property of equality
B.
symmetric property of equality
C.
reflexive property of equality
D.
substitution property of equality
Hint
3.
Solve 7(2
k
+ 4) - (3
k
+ 1) = 49.
A.
2
B.
1
C.
4
D.
1.8
Hint
4.
The formula for the area of a trapezoid is
Solve the formula for
h
.
A.
B.
C.
D.
Hint
5.
Solve the equation
A.
-1
B.
20
C.
D.
9
Hint