Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers. 9
+ 9
A. 18
B. 9
C. -27
D. 27
Answer: D
Mathematics
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Write the number in expanded form.7,000
A. (7 ? 103) + (0 ? 102) + (0 ? 101) + (0 ? 100) B. (7 ? 100) + (0 ? 101) + (0 ? 102) + (0 ? 103) C. (7 ? 104) + (0 ? 103) + (0 ? 102) + (0 ? 101) D. (7 ? 101) + (0 ? 102) + (0 ? 103) + (0 ? 104)
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Find the average velocity of an object which follows the position function s(t) over the given interval.s(t) = 3 + tan t, 
A. 0
B. 
C. - 
D. - 
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = y1/3, x = 0, y = 8
A. 12?
B. 16?
C. 
?
D. 32?
Mathematics
Solve the equation by completing the square.k2 = - 8k - 12
A. -2, -6 B. 18, -6 C. ± 2 D. 2, 6
Mathematics