Use the basic identities to simplify the expression.
A. 
B. 1
C. sin ? - cos ?
D. -1
Answer: D
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Use natural logarithms to solve the exponential equation. If necessary, round to the nearest thousandth.116(1.34)x/4 = 232
A. 11.133 B. 1.689 C. 7.813 D. 9.473
Solve the problem.Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels 212 miles in the same time that Dana travels 192 miles. If Chuck's rate of travel is 5 mph more than Dana's, and they travel the same length of time, at what speed does Chuck travel?
A. 56 mph B. 50 mph C. 48 mph D. 53 mph
Solve.Dave's movie collection, consisting of VHS tapes and DVDs, are arranged on a storage shelf that is 36 inches in length. The VHS tapes are 1.25 inches thick, and the DVDs have a thickness of 0.5 inch. If 51 of his movies exactly fit on the storage shelf, how many of the movies are DVDs?
A. 37 DVDs B. 24 DVDs C. 14 DVDs D. 34 DVDs
Use the appropriate geometric formula from the following list to find the requested measure. 
The area of a rectangle with a length of 90 inches and a width of 15 inches
A. 105 sq in. B. 1340 sq in. C. 1125 sq in. D. 1350 sq in.