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Use the following function rule to find $f(2)$ . $\newline$ $f(x) = 11 \cdot (9)^x + 8$ $\newline$ $f(2) =$ _____

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Evaluate an exponential function

Full solution

Q. Use the following function rule to find

f(2)

.

\newline

f(x) = 11 \cdot (9)^x + 8

\newline

f(2) =

_____

Substitute $x$ with $2$ : Substitute the value of $x$ with $2$ in the function $f(x)$ . $f(2) = 11 \cdot (9)^2 + 8$
Calculate $(9)^2$ : Calculate the value of $(9)^2.$ $\newline$ $(9)^2 = 81$
Multiply $11$ by $81$ : Multiply $11$ by $81$ . $\newline$ $11 \times 81 = 891$
Add $8$ to the result: Add $8$ to the result from Step $3$ . $\newline$ $891 + 8 = 899$

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