Question

Find the following.

f(x) = 7x − 9, g(x) = 8 − x

A:(f + g)(x) =

B:(f − g)(x) =

C:(fg)(x) =

D:(f/g)(x) =

Answer 1

what's the trouble? Just plug in the values.

For example,

(fg)(x) = f(x)*g(x) = (7x-9)(8-x)
= -7x^2 + 65x - 72

Do the others in like wise.