Express the sum or difference as a product of sines and/or cosines.cos(6?) + cos(4?)
A. 2 cos(5?) cos ?
B. 2 cos(5?) sin ?
C. 2 sin(5?) sin ?
D. 2 cos(5?)
Answer: A
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Solve the problem.Three coins are tossed 10 times to simulate the outcomes of the sexes of the children in a three-child family. If H simulates a boy and T a girl, use these results to determine the probability that the family has at least two boys.
?
A. 
B. 
C. 
D. 
Which of the following companies is the largest restaurant company in the world?
A. Good Eats B. McDonald's C. Applebees D. Smedley's PLC
Solve.The perimeter of a school's rectangular field is 666 feet. The length of the field is twice the width. The principal decides to cut down some trees and increase the length of the field by 70 feet and the width by 20 feet. How much larger will the area of the new field be compared to the area of the old field?
A. 24,642 square feet B. 13,610 square feet C. 38,252 square feet D. 846 square feet
Solve the inequality. Graph the solution set and write the solution set in set-builder notation.(x + 7)(x + 1) > 0
A. {x|x < -7 or x > -1}
B. {x|-7 ? x ? -1}
C. {x|-7 < x < -1}
D. {x|x ? -7 or x ? -1}