if f(x)=3x+9, g(x)=5*2 find (f+g)(x)

Question

goformit100 · Answer

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debbieg · Answer

(f+g)(x) simply means to add together the expressions for f(x) and g(x) (and simplify, is possible).

E.g. (f+g)(x)=f(x)+g(x)

debbieg · Answer

I'll do an example similar to yours:

if f(x)=4x-7, g(x)=6*8 find (f+g)(x)

ANSWER:
(f+g)(x)=f(x)+g(x)=4x-7+6*8
                           =4x-7+48
                           =4x+41