Simplify the radical.
A. 2
B. 4
C. 2
D. 2
Answer: A
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Rewrite the expression in terms of exponentials and simplify the results.cosh 10x + sinh 10x
A. e10x - e-10x B. 10x C. e10x D. 2e10x
Decide if the number is rational or irrational.-
A. Rational B. Irrational
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -x2 + 2x + 8
A. Increasing on (1, ?); decreasing on (-?, 1) B. Increasing on (- 1, ?); decreasing on (-?, - 1) C. Increasing on (-?, - 1); decreasing on (- 1, ?) D. Increasing on (-?, 1); decreasing on (1, ?)
Determine where the graph of f is below the graph of g by solving the inequality 
.f(x) = x4 - 19g(x) = 7x2 - 1
A. f(x) ? g(x) if x ? 3 B. f(x) ? g(x) if -3 ? x or x ? 3 C. f(x) ? g(x) if -3 ? x D. f(x) ? g(x) if -3 ? x ? 3