Simplify. Assume that no radicands were formed by raising negative quantities to even powers.3
+ 9
A. 12
B. 84
C. 27
D. 12
Answer: A
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Find the derivative at each critical point and determine the local extreme values.y = x2/3(x2 - 9); x ? 0
A. 
B. 
C. 
D. 
Factor completely, or state that the polynomial is prime.9x2 - 12x + 4
A. (3x - 2)(3x + 2) B. (3x - 2)2 C. (9x + 1)(x + 4) D. (3x + 2)2
Solve the problem.Trains S and T are both traveling in the same direction. Their distance in miles North of Chicago after x hours are computed by the functions fS and fT, respectively, and their graphs are shown in the figure for 
During what time interval is Train T closer to Chicago than Train S? 
A. always, or x ? 0 B. between 3.3 and 8 hours, or 3.3 < x ? 8 C. between 0 and 3.3 hours, or 0 ? x < 3.3 D. after 3.3 hours, or x > 3.3
Provide an appropriate response.The graph of y > 0 lies in which 2 quadrants?
Fill in the blank(s) with the appropriate word(s).