Use sum-to-product formulas to rewrite the expression as a product.cos 
- cos 
A. 2 sin 
cos 
B. 2 sin 
sin 
C. -2 sin 
sin 
D. -2 cos 
cos 
Answer: B
Mathematics
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A function f(x), a point x0, the limit of f(x) as x approaches x0, and a positive number ? is given. Find a number 
such that for all x, 0 < 
< ? ? 
< ?.f(x) = -2x - 7, L = -11, x0 = 2, and ? = 0.01
A. 0.01 B. 0.005 C. -0.005 D. 0.0025
Mathematics
Find a general term an for the arithmetic sequence.a8 = 31, a13 = 1
A. an = -6n + 73 B. an = 6n + 81 C. an = -5n + 79 D. an = -6n + 79
Mathematics
Find the value of the expression.
A. 
B. 
C. 
D. 
Mathematics
Evaluate.
A. -9 B. 9 C. 3 D. -3
Mathematics