The problem requires evaluating the function $f(x) = 5^x$ when $x = 2$.

Solution:

Substitute $x = 2$ into the function:

$f(2) = 5^2 = 25$

Final Answer:

$f(2) = 25$

Let me know if you'd like further explanation!

Here are five related questions to explore:

1. What is $f(x) = 5^x$ when $x = 3$?
2. How do you evaluate exponential functions with fractions as exponents?
3. What happens when the base $b$ in $b^x$ is less than 1?
4. How can you graph the function $f(x) = 5^x$?
5. What is the derivative of $f(x) = 5^x$ with respect to $x$?

Tip: Exponential functions grow very quickly as the exponent increases—keep this in mind when solving problems!