Solve the problem.Recycling, like all real processes, is not 100% efficient. Each time an aluminum can is recycled, a portion of the can becomes unrecoverable and thus "disappears" from future recycles. The fraction of an aluminum can that is reclaimable after n recycles is given by F = (0.87)n. The can has effectively "disappeared" when F < 0.07. How many times can the can be recycled before it "disappears"?
A. 22
B. 17
C. 21
D. 19
Answer: D
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Solve the problem. If the answer is an amount of money, round to the nearest dollar.Maria has saved $535 at a bank. She wants to accumulate $1250 to attend computer camp. What percent of her goal has been reached?
A. 42.8% B. 0.428% C. 20% D. 2%
Solve the problem.Nikki is fishing from a bank 14 feet above water level. In this location, the fish tend to feed at 44 feet below the surface. How long must Nikki's fish line be to reach the fish?
A. 58 ft. B. 30 ft. C. -30 ft. D. -14 ft.
Evaluate.Find 
(-5) when f(x) = 4x - 2 and g(x) = 5x2 + 14x + 2.
A. 
B. - 
C. 
D. 
Solve the problem.Amy has 2 blue, 3 red, and 4 green books to arrange on a shelf. In how many ways can the books be arranged if books of the same color must be grouped together? (Assume that books of the same color are distinguishable.)
A. 32 B. 6 C. 1728 D. 288