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OpenStudy (kellyspeakslouder):
f(x) = 4x + 7, g(x) = 3x2 Find (fg)(x). A. 12x2 + 21x B. 3x2 + 4x + 7 C. 12x3 + 21x2 D. 12x + 21
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OpenStudy (kellyspeakslouder):
@jim_thompson5910
OpenStudy (danjs):
That means to multiply the two functions... \[\large (f*g)(x) = f(x) * g(x) = (4x+7)*(3x^2)\]
OpenStudy (kellyspeakslouder):
what I got isn't one of the options .-.
OpenStudy (kellyspeakslouder):
@DanJS
OpenStudy (danjs):
what did you get?
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OpenStudy (kellyspeakslouder):
21x squared + 4x
OpenStudy (kellyspeakslouder):
@DanJS
OpenStudy (kellyspeakslouder):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
|dw:1473299535636:dw|
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