Use the identity cos2 s + sin2 s = 1 to find the value of x or y, as appropriate.
, y > 0
A. 
B. 
C. 
D. 
Answer: A
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Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.9y2 + 18y + 8
A. prime B. (9y + 4)(y + 2) C. (3y - 4)(3y - 2) D. (3y + 4)(3y + 2)
Solve the problem.A rectangular space of 209 square feet is allocated for the living and dining areas in an apartment. Find the width of the square living area given that the width of the dining area is 
A. 10 feet B. 13 feet C. 11 feet D. 19 feet
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
Add or subtract as indicated. Simplify, if necessary.
- 
A. 
B. 
C. 8z - 9
D. 