Find the derivative of the function.f(x) = 4x2 + 2x + 4 - 
A. f'(x) = 8x + 2 + 
B. f'(x) = 4x + 2 - 
C. f'(x) = 8x2 + 2 - 
D. f'(x) = 4x2 + 2 + 
Answer: A
Mathematics
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Solve the problem.In 2010 a certain county recovered 24% of its municipal wastes through recycling, up from 17% in 2005. Let P represent the percentage recycled and t the number of years since 2005. Find a linear function P that fits this data.
A. P(t) = 1.4t + 24 B. P(t) = 1.4t + 17 C. P(t) = -1.4t + 7 D. P(t) = 0.7t - 17
Mathematics
Find the sum.8 + (-3) + (-15) + 7
A. 13 B. 33 C. -3 D. -17
Mathematics
Factor the special products, which are the sum or difference of two perfect cubes.t3 + 343
A. (t + 7)(t2 - 7t + 49) B. (t + 7)(t2 + 49) C. (t - 343)(t2 - 1) D. (t - 7)(t2 + 7t + 49)
Mathematics
Given matrix A, find the indicated cofactor.Find A13.A =
A. 21 B. 9 C. -6 D. -21
Mathematics