Simplify. Assume that all variables represent any real number.
A. -
B. -x
C. 
D. x
Answer: C
Mathematics
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Solve the formula for the specified variable.S = 2?rh + 2?r2 for h
A. h = 
B. h = 
- 1
C. h = S - r
D. h = 2?(S - r)
Mathematics
For the given functions f and g, find the requested function and state its domain.f(x) = 9x + 1; g(x) = 6x + 3Find f ? g.
A. (f ? g)(x) = 54x2 + 33x + 3; all real numbers B. (f ? g)(x) = 54x2 + 3; {x|x ? 3} C. (f ? g)(x) = 15x2 + 33x + 4; all real numbers D. (f ? g)(x) = 54x2 + 9x + 3; {x|x ? 3}
Mathematics
Find the opposite of the number.- 
A. - 5
B. - 
C. 
D. 5
Mathematics
Solve the inequality.x2 + 6x ? 0
A. (-?, 0] or [6, ?) B. [-6, 0] C. [0, 6] D. (-?, -6] or [0, ?)
Mathematics