Use sum-to-product formulas to rewrite the expression as a product.sin 6x - sin 2x
A. 2 sin 4x cos 2x
B. 2 cos 2x cos 4x
C. 2 sin 2x cos 4x
D. 2 sin 2x
Answer: C
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Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Using the critical-path algorithm to schedule this project with two processors, the total combined idle time of the two processors is
A. 7 hours. B. 3 hours. C. 1 hour. D. 5 hours. E. none of these
Solve the problem. Use 3.14 for ?. Round your answer to the nearest hundredth.Robert has a rectangular garden that is currently 400 ft2 and has a perimeter of 
He wants to increase the size of his garden by 4 ft in both directions. What will be the area of his expanded garden?
A. 576 ft2 B. 160 ft2 C. 1600 ft2 D. 96 ft2
Solve.How many different three-digit numbers can be written using digits from the set {3, 4, 5, 6, 7} without any repeating digits?
A. 20 B. 120 C. 10 D. 60
Translate the percent sentence to a percent proportion. ? What percent of 61is 13? ?
A. 
B. 
C. 
D. 