Establish the identity.cos
= -sin x
What will be an ideal response?
cos 
= cos x cos 
- sin x sin 
= (cos x)(0) - (sin x)(1) = - sin x.
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Solve the problem.This chart shows the number of meals served in a restaurant during each of the past 4 months. Assume that the information in the chart defines a function with the name g. State the range of g.
A. {(January, 2000), (February, 2057), (March, 2041), (April, 2062)} B. {(2000, January), (2057, February), (2041, March), (2062, April)} C. {January, February, March, April} D. {2000, 2057, 2041, 2062}
Solve the problem.Express the gross salary G of a person who earns $15 per hour as a function of the number x of hours worked.
A. G(x) = 
B. G(x) = 15 + x
C. G(x) = 15x
D. G(x) = 15x2
Solve the problem.Find a company's total-cost function if its marginal cost function is C'(x) = 16x - 6 and its fixed cost is $12.
A. C(x) = 8x2 - 6x + 12 B. C(x) = 16x2 - 6x + 12 C. C(x) = 16x2 - 6x + 11 D. C(x) = 8x2 - 6x + 11
Graph the polar equation.r = 7 cos 5?
A. 
B. 
C. 
D. 