1.
Multiply 4
x
2
(–
x
2
– 3
x
+ 2).
A.
–4
x
2
– 12
x
+ 8
B.
–4
x
2
– 7
x
+ 8
C.
–4
x
4
– 7
x
3
+ 8
x
2
D.
–4
x
4
– 12
x
3
+ 8
x
2
Hint
2.
Simplify 5(2
k
2
– 3
k
) – 6
k
(–
k
2
+
k
– 7).
A.
–6
k
3
+ 4
k
2
– 5
k
B.
6
k
3
+ 4
k
2
+ 27
k
C.
–6
k
3
+ 4
k
2
+ 27
k
D.
6
k
3
+ 4
k
2
– 5
k
Hint
3.
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 + 100
x
C.
100
x
D.
2000
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.
20 uses
B.
5 uses
C.
10 uses
D.
It will never happen.
Hint
5.
Simplify
A.
B.
C.
D.
Hint