Question

Use f(x)= 7x+2 and g(x)=x^2
Find the following:

1.f(x) + g(x)

2. f(g(-2))

3. f * g(x)

Answer 1

for 1 just add f(x) and g(x)

for 3 just multiply f(x) and g(x)

for 2 evaluate f at g(x)

i.e.,
if f(x) = 7x + 2, then . . .
f(g(x)) = 7(g(x)) + 2

does this help ?

Answer 2

Yes, thank you