Factor completely.8z2 - 6zy - 9y2
A. (2z + 3y)(4z - 3y)
B. (8z + y)(z - 9y)
C. (8z - 3y)(z + 3y)
D. (2z - 3y)(4z + 3y)
Answer: D
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Determine the monthly principal and interest payment for the mortgage. Use the principal and interest payment formula 
A. $2444.11 B. $13,085.86 C. $31,416.26 D. $2078.11
Simplify the expression. Write the result using positive exponents only.(z8x8)-4
A. z4x4
B. 
C. z12x12
D. 
Solve the problem.Assume that the elevation E, in feet, of a sag in a proposed route is given by 
where x represents the horizontal distance in feet along the proposed route and 0 ? x ? 5000. For what x-values is the elevation 1150 feet? Round your answer to the nearest foot.
A. x = 556 ft or x = 7510 ft B. x = 556 ft or x = 7500 ft C. x = 566 ft or x = 7510 ft D. x = 566 ft or x = 7500 ft
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 14 paperback books to trade and gets $14.92 credit. Some of the books had a cover price of $5.97, the rest $4.97. She wants to get some Tom Clancy books having a cover price of $5.97. How many $5.97 books did she bring in and how many Clancy books can she get without paying any additional cash?
A. 5 $5.97 books, 5 Clancy books B. 9 $5.97 books, 2 Clancy books C. 5 $5.97 books, 4 Clancy books D. 5 $5.97 books, 2 Clancy books