Solve the problem.The Paperback Trader is a book store that takes in used paperbacks for 20% of their cover price and sells them for 50% of their cover price. Pat brings in a stack of 17 paperback books to trade and gets 
credit. Some of the books had a cover price of $7.96, the rest 
She wants to get some Tom Clancy books having a cover price of 
How many 
style="vertical-align: -4.0px;" /> books did she bring in and how many Clancy books can she get without paying any additional cash?
A. 6 $7.96 books, 6 Clancy books
B. 6 $7.96 books, 2 Clancy books
C. 11 $7.96 books, 2 Clancy books
D. 6 $7.96 books, 5 Clancy books
Answer: D
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Find the axis of symmetry of the function.f(x) = 2x2 + 8x + 5
A. x = 2 B. x = -2 C. x = -3 D. x = 3
Rationalize the denominator of each fraction.
A. 
B. 
C. 
D. 
Solve the problem.In how many ways can 8 people be chosen and arranged in a straight line, if there are 12 people from whom to choose?
A. 11,880 B. 23,760 C. 19,958,400 D. 96
Use the given information given to find the exact value of the trigonometric function.cos ? = 
,
? lies in quadrant IV
Find cos 
.
A. - 
B. - 
C. 
D. 