Find the indicated derivative of the function.f'''(x) for f(x) = x(4x - 7)3

A. 512x - 672
B. 768x - 1008
C. 96x - 126
D. 4x - 2016


Answer: D

Mathematics

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Find d2y/dx2 without eliminating the parameter.x = 1 - 10sin t, y = 1 + 9cos t, t ? n?

A. -  sec t
B. -  sec3t
C.  cot t
D. -  sec3t

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Tell whether the statement is true or false.cos 67° = cos 13°cos 54° - sin 13°sin 54°

A. True B. False

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Solve the problem.Stephanie receives a salary of $650 per month plus a commission of 5.5% on the first $3,000 of sales, and 7% of all sales over $3,000. Find Stephanie's gross pay for the month if her sales were $12,430.

A. $2960.10 B. $1685.10 C. $825.10 D. $1475.10

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Find the identical expression for the following. ? ?

A. ?
B.
C. ?
D. ?
E. ?

Mathematics