Provide an appropriate response.Determine the interval(s) over which 
is concave upward.
A. (-3, ?)
B. (-?, ?)
C. (-?, -3)
D. (-?, 3)
Answer: C
Mathematics
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Solve the problem.Assume that the profit P made when t units are sold, t > 0, is given by P(t) = t2 - 26t + 168. For what values of t will there be a loss (that is, P < 0)?
A. t > 0 B. 0 < t < 12 or t > 14 C. 12 < t < 14 D. t = 12 or t = 14
Mathematics
Use the Binomial Theorem to find the indicated coefficient or term.The coefficient of x in the expansion of (4x + 5)5
A. 15,625 B. 12,500 C. 2500 D. 10,000
Mathematics
Write in terms of i.
A. -2i
B. 2i
C. 2
D. -2
Mathematics
Find the derivative.f(x) = 3x4 - 6x3 - 1
A. f'(x) = 4x3 + 3x2 - 7 B. f'(x) = 4x3 + 3x2 C. f'(x) = 12x3 - 18x2 - 7 D. f'(x) = 12x3 - 18x2
Mathematics