Solve the problem.Express cos(A + B + C) in terms of sin A, sin B, sin C, cos A, cos B, and cos C.
A. sin A cos B cos C + sin B cos A cos C + sin C cos A cos B - sin A sin B sin C
B. cos A cos B cos C - sin A sin B cos C - sin A sin C cos B - sin B sin C cos A
C. sin A cos B cos C + sin B cos A cos C + sin C cos A cos B + sin A sin B sin C
D. sin A cos B cos C + sin B cos A cos C - sin C cos A cos B + sin A sin B sin C
Answer: A
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Find the product.(x - 2y)(x - 9y)
A. x2 - 11xy + 18y2 B. x - 11xy + 18y C. x2 - 14xy + 18y2 D. x2 - 11xy - 11y2
Find the volume of the figure. (Use ? ? 3.14 and round as directed in parentheses.)
A. 53 m3 B. 118 m3 C. 42 m3 D. 185 m3
Solve the problem.Find the area A and circumference C of a circle of diameter 18 in.. Use 3.14 for ?. Round the result to the nearest tenth.
A. A = 1017.4 in.2; C = 28.3 in. B. A = 113 in.2; C = 28.3 in. C. A = 254.3 in.2; C = 56.5 in. D. A = 56.5 in.2; C = 56.5 in.
Give the equation of the horizontal asymptote, if any, of the function.f(x) = 
A. y = 
B. y = 3
C. y = 0
D. none