Question

i need HELP....If f(x) = x 2 + 1 and g(x) = 3x + 1, find 2·f(4).

Answer 1

We have,
\(f(x) = x 2 + 1\)

We want,
\(2\times f(4)\)
That means that you plug in for for all instances of x in f(x), and then multiply that by 2.

Answer 2

I don't know how u mean...

Answer 3

\(f(4)=(4)^2+1=17\rightarrow 17\times2=?\)

Answer 4

thanks that really helped...:)

Answer 5

You are welcome!