Asked by Tracey
given that f(x) = 3x + 7 and g(x) = (-x)cubed + 1, find (fog)(-2)
Answers
Answered by
Reiny
(fog)(-2)
= f(g(-2))
g(-2) = (-(-2))^3 + 1 = 10
f(10) = 3(10)+7 = 37
so (fog)(-2) = 37
= f(g(-2))
g(-2) = (-(-2))^3 + 1 = 10
f(10) = 3(10)+7 = 37
so (fog)(-2) = 37
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