Iwill give you brainlist and points

When you multiply numbers with the same base and exponents, you just add the exponents together. In the case of the first question:

* =

When dividing, subtract the exponents instead, and when there's an exponent outside the parentheses the way it is on the 3rd question, multiply them together.

Hope this helps! :)

16 feet is the correct answer to this problem.