Write the product as a sum or difference of trigonometric functions.-10 cos(-?) sin(-5?)
A. 5(sin 6? - sin 4?)
B. -5(cos 6? - cos 4?)
C. -10(cos 6? + cos 4?)
D. 5(sin 6? + sin 4?)
Answer: D
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Solve for the missing values. Round money to the nearest cent, rate to the nearest tenth of a percent, and time to the nearest day.Principal: 
Interest: $412Rate: 9.9%Time: 
daysMaturity value: $8057
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Decide what number must be added to the binomial to make a perfect square trinomial.x2 + 
x
A. 
B. 
C. 
D. 
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A. $24,010 B. $118 C. $235 D. $2001