Question

given the function $f(x) = 5x + 2$, find the indicated values.
(a) $f(1)$
(b) $f(r)$

(a) $f(1) = 7$ (simplify your answer.)
(b) $f(r) = \square$ (simplify your answer.)

Explanation:

Step1: Substitute \( r \) into the function

To find \( f(r) \), we substitute \( x = r \) into the function \( f(x) = 5x + 2 \).
So we get \( f(r)=5\times r + 2 \).

Step2: Simplify the expression

Simplifying \( 5\times r+2 \) gives \( 5r + 2 \).

Answer:

\( 5r + 2 \)