For the function, find the interval(s) for which f'(x) is positive.f(x) = 
x3 + 2x2 - 16x + 7
A. (-?, -2) and (4, ?)
B. (4, ?)
C. (-?, -4)
D. (-?, -4) and (2, ?)
Answer: D
Mathematics
You might also like to view...
Solve and check. Note that the equation could be an identity or a contradiction.
(r + 6) = 
(r + 8)
A. 4 B. -12 C. 3 D. -4
Mathematics
Convert to a rectangular equation.r + 9 sin ? = 3 cos ?
A. x2 + y2 = 9x - 3y B. x2 + y2 = 3x - 9y C. x2 - y2 = 9x - 3y D. 80x2 + 8y2 = 54xy
Mathematics
Use the compound interest formula to determine the interest earned in the given period.P = $4000 at 6.5% compounded annually for 14 years
A. $9659.50 B. $13,659.50 C. $5659.50 D. $18,139.01
Mathematics
Find the indicated term of the sequence.The tenth term of the arithmetic sequence -5, -1, 3, ...
A. 35 B. -45 C. -41 D. 31
Mathematics