Find the derivative of the function and evaluate the derivative at the given x-value.f(x) = 
at x = -1
A. f'(x) = - 
; f'(-1) = -8
B. f'(x) = 
; f'(-1) = 8
C. f'(x) = 8; f'(-1) = 8
D. f'(x) = - 8x2; f'(-1) = - 8
Answer: A
Mathematics
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A. - 
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C. 
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?
, 
?
In how many seconds would only 10% 
of the students remember? Round your answer to the nearest second.
?
Solve for the exact value of t in terms of R.
What will be an ideal response?
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