Find the intervals where f''(x) < 0 ir f''(x) > 0 as indicated.f''(x) < 0 
A. (-5, 2)
B. (-2, ?)
C. (-?, -2)
D. (-5, 5)
Answer: C
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A. 35.24 B. 3524 C. 352.4 D. -35.24 E. 3.524
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A. 48,922 ft ? lb B. 24,461 ft ? lb C. 440,294 ft ? lb D. 880,589 ft ? lb
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Express the following ratio as a fraction in lowest terms.27 people to 15 people
A. 
B. 
C. 
D. 