Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.(-8x5)(-4x4)
A. -12x9
B. -12x20
C. 32x9
D. -32x20
Answer: C
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Find the angle between the given vectors to the nearest tenth of a degree.u = 
, v = 
A. 2.2° B. -7.8° C. 4.4° D. 14.4°
Solve the problem.Mrs. White wants to crochet hats and afghans for a church fundraising bazaar. She needs 8 hours to make a hat and 2 hours to make an afghan, and she has no more than 58 hours available. She has material for no more than 14 items and no more than 10 afghans. The bazaar will sell the hats for $23 each and the afghans for $5 each. How many of each should she make to maximize the income for the bazaar? What is the maximum income?
A. 7 hats, 7 afghans; $196 B. 10 hats, 4 afghans; $250 C. 9 hats, 5 afghans; $232 D. 5 hats, 9 afghans; $160
Solve the problem.On the July 5 billing date, David had a balance due of $857.86 on his credit card. The transactions during the following month were: 
The interest rate on the card is 1.8% per month. Using the average daily balance method, find the finance charge on August 5 (July has 31 days).
A. $13.37 B. $14.08 C. $13.91 D. $13.89
Multiply.-11(-11)
A. 121 B. -132 C. -121 D. 132