Provide an appropriate response.
Using only this graph of f(x) = a(x - h)2 + k, what are the signs of h and k?
A. h is positive and k is negative.
B. h is negative and k is positive.
C. Both are positive.
D. Both are negative.
Answer: C
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Evaluate the integral using the given substitution.
dx , u = x3/2 - 2
A. 
sin (x3/2 - 2) + C
B. x3/2 - 2 + 
sin 2(x3/2 - 2)+ C
C. 
sin3 (x3/2 - 2) + C
D. 
(x3/2 - 2) + 
sin 2(x3/2 - 2) + C
Solve the problem.A fair coin is tossed three times. Which of the following describes the sample space for this random experiment?
A. {3 H's, 2 H's and 1 T, 1 H and 2 T's, 3 T's} B. {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT} C. {HHH, TTT} D. {H, T} E. none of these
Write the expression in the form a + bi.
A. 
- 
i
B. 
- 
i
C. 
- 
i
D. 
- 
i
Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.10 < 5x ? 30
A. (-?, 2] ? (6, ?)
B. (-?, 2) ? [6, ?)
C. [2, 6)
D. (2, 6]