Find the composition.f(x) = -2x - 6; g(x) = -5x2 - 5x - 8Find (f ? g)(-9).
A. -170
B. -788
C. -128
D. 730
Answer: D
Mathematics
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Simplify the expression.cos x - cos x sin2 x
A. sec2 x B. sin x C. cos3 x D. tan2 x
Mathematics
Complete the table of values for the given equation.4x - 5y = -20
A. 10; 5; -5 B. 0; 5; -5 C. 10; -5; 5 D. 0; -5; 5
Mathematics
Write the expression as a pure imaginary number.
A. 10i
B. -10i
C. -
i
D. ±10
Mathematics
The figure shows the graphs of the cost and revenue functions for a company that manufactures and sells binoculars. Use the information in the figure to answer the question.
What is the profit when 782 binoculars are produced?
A. $64 B. $4628 C. $1628 D. $3064
Mathematics