Complete the identity.4 sin x cos3 x + 4 sin3 x cos x = ?
A. 2 cos 2x
B. 2 cos x
C. 2 sin 2x
D. 2 sin x
Answer: C
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Provide an appropriate response.Can you find the sum of the infinite geometric series 3 + 9 + 27 + . . . ? Why or Why not?
A. Yes. The common ratio, r, is less than 1. B. No. The common ratio, r, is greater than 1. C. Yes. This is a geometric series. D. No. This is not a geometric series.
Answer the question.Which pair of values of x and y makes 3x + y equal 7?
A. x = 3 and y = 2 B. x = 2 and y = 1 C. x = 1 and y = 2 D. x = 2 and y = 3
The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(-2, 0)
A. decreasing B. increasing C. constant
Simplify the fraction. (Write the fraction in lowest terms.) If the fraction cannot be simplified, so state.
A. 
B. 
C. 
D. 