Solve the problem.Let f(x) = cos x, g(x) = x - ?/2, and h(x) = 2x. Find h(f(x)).
A. 2 cos x
B. cos(2x)
C. 2 cos(x - ?/2)
D. cos(x - ?/2)
Answer: A
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Solve the problem. Write your answer as a mixed number when possible.A biology experiment required pouring 
gallon of nutrient solution and 
gallon of pure water into a tank. At the end of the experiment, 
gallon of fluid had evaporated. How much fluid remained in the tank?
A. 
gallon(s)
B. 
gallon(s)
C. 2
gallons(s)
D. 
gallon(s)
Find a polynomial function of lowest degree with rational coefficients that has the given numbers as some of its zeros.1 - i, -5
A. f(x) = x3 + 3x2 - 8x + 10 B. f(x) = x3 - 3x2 - 8x + 5 C. f(x) = x3 - 3x2 - 8x - 10 D. f(x) = x3 + 5x2 - 9x + 10
Solve the problem.The profit made when t units are sold, t > 0, is given by 
Determine the number of units to be sold in order for P = 0 (the break- even point).
A. t > 20 B. t = 20 or t = 11 C. t = 31 D. t = -20 or t = -11
Fill in the blank with one of the choices listed below. Some choices may be used more than once. 
To write fractions as decimals, divide the 
by the 
.
A. denominator; numerator B. numerator; denominator C. mean; median D. median; mean