Question 994562
 If f ′(x) = 9 x+ 12 and f(5) = −11, find f(x). 
If f ′(x) = 9 x+ 12 
I have f (x) = 9x^2/2 + 12x + C 
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Solve for "C" using f(5) = -11
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-11 = (9/2)(5)^2+12(5) + C
-71 = (9*25/2 +C
-71 = 112.5
C = -183.5
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f(x) = (9/2)^2 + 12x - 183.5
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Cheers,
Stan H.
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