1.
Simplify 6
a
+ 15
a
.
A.
42
a
B.
21
a
2
C.
6
a
+ 15
a
D.
21
a
Hint
2.
Translate ''the circumference of a circle is two times pi times the radius'' into an equation, inequality, or formula.
A.
B.
C.
D.
Hint
3.
Solve
x
+ 5 = -7.
A.
x
= 2
B.
x
= -2
C.
x
= 35
D.
x
= -12
Hint
4.
Solve
A.
a
=
B.
a
= 7
C.
a
=
D.
a
= 14
Hint
5.
Solve 2
x
= -10.
A.
x
= 5
B.
x
= 8
C.
x
= -5
D.
x
= -12
Hint
6.
Solve the equation 3
x
+ 7 = 5
x
- 2.
A.
B.
C.
D.
Hint
7.
Translate the sentence into a formula. The area of a trapezoid is equal to one-half times the sum of the bases times the height.
A.
B.
C.
D.
Hint
8.
Solve
t
– 32 = 96.
A.
t
= -128
B.
t
= -64
C.
t
= 64
D.
t
= 128
Hint
9.
Solve 9
x
– 11 = -56.
A.
x
= 405
B.
x
= 5
C.
x
= -405
D.
x
= -5
Hint
10.
Solve 5
t
+
u
+
v
= 3 for
t
.
A.
B.
t
= -2 –
u
–
v
C.
t
= 15 –
u
–
v
D.
Hint
11.
Use the formula
P
= 2
l
+ 2
w
to find the length of a rectangle whose perimeter is 57 inches and whose width is 13 inches.
A.
15.5 inches
B.
31 inches
C.
22 inches
D.
10.3 inches
Hint
12.
Solve –6
x
– 12 > -18.
A.
x
> 5
B.
x
< 5
C.
x
> 1
D.
x
< 1
Hint
13.
Solve
A.
B.
C.
D.
Hint
14.
What best describes the equation 2(4 + 6) = 20?
A.
open
B.
none of these
C.
false
D.
true
Hint
15.
Which is a solution to the equation
?
A.
4
B.
32
C.
25
D.
8
Hint
16.
Which is the solution to
A.
4
B.
8
C.
D.
32
Hint
17.
Which inequality is shown in the graph?
A.
p
B.
p
C.
p
D.
p
Hint
18.
Which is the graph of the solution to
A.
B.
C.
D.
Hint