1.
Solve 4
a
(
a
– 4) – 7
a
=
a
(4
a
– 3) + 20.
A.
a
= -6
B.
a
= -2
C.
D.
a
= -1
Hint
2.
Write an expression for the area of the rectangle shown below.
A.
12
xy
2
+ 4
x
3
y
B.
6
xy
2
+ 4
x
3
y
C.
9
x
2
y
4
+ 12
x
4
y
3
D.
6
xy
2
+ 7
x
3
y
Hint
3.
Simplify 5(2
k
2
– 3
k
) – 6
k
(–
k
2
+
k
– 7).
A.
6
k
3
+ 4
k
2
+ 27
k
B.
6
k
3
+ 4
k
2
– 5
k
C.
–6
k
3
+ 4
k
2
+ 27
k
D.
–6
k
3
+ 4
k
2
– 5
k
Hint
4.
A cafeteria has two meal plans. One requires the worker to pay $20 for the card, and $1 each time
x
she uses it. The other plan requires the worker to pay $30 for the card, but only $0.50 each time
x
she uses it. After how many uses will the workers with different plans have spent the same amount of money?
A.
It will never happen.
B.
5 uses
C.
20 uses
D.
10 uses
Hint
5.
Solve
x
(
x
– 2) + 2
x
(
x
+ 3) + 10 = 3
x
(
x
– 1) + 31.
A.
x
= 4
B.
x
= 3
C.
x
= –2
D.
x
= 2
Hint