You evaluated expressions that have variables and exponents.

Evaluate the expression when .

17
23
41
63

To evaluate the expression when , we first substitute with 3. This gives us:

.

So, the correct answer is 23!

Next time you’re working with variables and exponents, remember that following the order of operations (parentheses, exponents, multiplication and division, addition and subtraction) is key to getting the right answer. It’s like following a recipe; skip a step, and the cake may not rise!

For more practice, try creating your own expressions with different variables and exponents. Challenge yourself by substituting various values and see how the outcome changes. It’s a fun way to build your skills and understanding of algebra!