Express the product as a sum containing only sines or cosines.cos(5?) cos(9?)
A. 
[cos(14?) - cos(4?)]
B. cos2(29?2)
C. 
[cos(4?) + cos(14?)]
D. 
[cos(14?) - sin(4?)]
Answer: C
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Use a graphing calculator to solve the nonlinear system. Give x- and y-coordinates to the nearest hundredth.x2 - y2 = 7.82x = 2y - 5
A. {(-6.31, -5.65), (2.97, -1.01)} B. {(-6.31, 5.65), (2.97, 1.01)} C. {(-2.97, -1.01), (6.31, -5.65)} D. {(-2.97, 1.01), (6.31, 5.65)}
Solve the problem.Arnold's regular hourly rate is $10.92 per hour for a 40-hour work week. He is paid time-and- a-half for all overtime work. One week Arnold worked 45.5 hours. What would be his overtime pay?
A. $526.89 B. $90.09 C. $496.86 D. $68.31
Solve the problem.Ken is 6 feet tall and is walking away from a streetlight. The streetlight has its light bulb 14 feet above the ground, and Ken is walking at the rate of 4.1 feet per second. Find a function, d(t), which gives the distance Ken is from the streetlight in terms of time. Find a function, 
, which gives the length of Ken's shadow in terms of d. Then find 
.
A. (S ? d)(t) = 6.93t B. (S ? d)(t) = 3.08t C. (S ? d)(t) = 3.9t D. (S ? d)(t) = 2.26t
Solve the system of equations. If there is no solution to the system, give a reason.Solve using the addition method.4x + 7y = 344x + 2y = 64
A. (19, -6) B. (-19, 7) C. (-6, 19) D. (-19, 4)