Question

Use the function to find f(-2)

Answer 1

Answer:

$\frac{1}{9}$

Step-by-step explanation:

1. Substitute the -2 into the equation.  $f(-2)=3^{-2}$
2. Begin to simplify the exponent.  $x^{-y}=\frac{1}{x^y}$, so you get $f(-2)=\frac{1}{3^2}$
3. Finish simplifying the exponent.  3 times 3 is 9.  $f(-2)=\frac{1}{9}$

Answer 2

Answer:

f(-2) = 1/9

Step-by-step explanation:

Plug in -2 to x in the equation:

f(x) = 3^x

f(-2) = 3^(-2)

Solve. Note that if there is a negative in the power, you must flip the "fraction" and set it over 1. The answer itself does not become negative:

f(-2) = 1/(3^2)

f(-2) = 1/(9)

f(-2) = 1/9 is your answer.

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