Question

w2q3: domain, range, and evaluate exponential function
my ixl learni

★ z.2 evaluate exponential functions lwe

use the following function rule to find $f(1)$.
$f(x) = -9(5)^x - 12$
$f(1) = \square$
submit

Explanation:

Step1: Substitute $x=1$ into function

$f(1) = -9(5)^1 - 12$

Step2: Simplify exponential term

$5^1 = 5$, so $f(1) = -9\times5 - 12$

Step3: Calculate multiplication

$-9\times5 = -45$, so $f(1) = -45 - 12$

Step4: Compute final subtraction

$-45 - 12 = -57$

Answer:

$-57$