Question

Given f(x) = 21x + 13, find f(7)f(7) =

Answer 1

$f(x)=21x+13$

In order to find f(7) we need to evaluate the given function for x = 7, so:

$\begin{gathered} x=7 \\ f(7)=21(7)+13 \\ f(7)=147+13 \\ f(7)=160 \end{gathered}$

Answer:

f(7) = 160