1.
Simplify 6
g
(-3
h
- 4).
A.
-18
g
h
- 4
B.
6
g
h
- 4
C.
-18
g
h
- 24
g
D.
-18
g
- 4
Hint
2.
Simplify 5
a
(4
a
2
– 2
a
) + 3
a
(-2
a
2
+ 4
a
).
A.
10
a
3
+ 4
a
2
B.
2
a
2
+ 10
a
C.
14
a
2
+ 2
a
D.
14
a
3
+ 2
a
2
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
– 5
k
D.
6
k
3
+ 4
k
2
+ 27
k
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.
2000 + 100
x
B.
2000
C.
100
x
D.
2100
Hint
5.
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.
10 uses
B.
5 uses
C.
20 uses
D.
It will never happen.
Hint