1.
Simplify 5
a
(4
a
2
– 2
a
) + 3
a
(-2
a
2
+ 4
a
).
A.
14
a
3
+ 2
a
2
B.
2
a
2
+ 10
a
C.
10
a
3
+ 4
a
2
D.
14
a
2
+ 2
a
Hint
2.
Solve 4
a
(
a
– 4) – 7
a
=
a
(4
a
– 3) + 20.
A.
a
= -2
B.
a
= -6
C.
D.
a
= -1
Hint
3.
Write an expression for the area of the rectangle shown below.
A.
6
xy
2
+ 4
x
3
y
B.
9
x
2
y
4
+ 12
x
4
y
3
C.
12
xy
2
+ 4
x
3
y
D.
6
xy
2
+ 7
x
3
y
Hint
4.
A worker has a cafeteria meal plan. The plan requires her to pay $20 for the card, and $1 each time
x
she uses it. If the company sells 100 cards, what is its total revenue?
A.
2100
B.
2000
C.
100
x
D.
2000 + 100
x
Hint
5.
Solve
x
(
x
– 2) + 2
x
(
x
+ 3) + 10 = 3
x
(
x
– 1) + 31.
A.
x
= 2
B.
x
= 3
C.
x
= –2
D.
x
= 4
Hint