Question

use the following function rule to find $f(1)$.
$f(x) = 9(7)^x + 8$
$f(1) = \square$

Explanation:

Step1: Substitute x=1 into function

$f(1) = 9(7)^1 + 8$

Step2: Simplify exponential term

$7^1 = 7$, so $f(1) = 9\times7 + 8$

Step3: Calculate multiplication

$9\times7 = 63$, so $f(1) = 63 + 8$

Step4: Calculate final sum

$63 + 8 = 71$

Answer:

71