youmadbro120411 youmadbro120411

17-02-2021
Mathematics

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For the function f(x)=7x+10 and g(x)=-4x-4, find (f * g)(x) and (f * g) (x) and (f * g)(-3)

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onyinyechijennifer11 onyinyechijennifer11

17-02-2021

Step-by-step explanation:

f(x)=7x+19, g(x)=-4x-4

(f*g)(x)= f(g(x))= f(-4x-4)

but f(x)=7x+10

so f*g(x)=7(-4x-4)+10=-28x-28+10

= -28x-18

therefore f*g(-3)= -28(-3)-18 =84-18=66

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