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! :)

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: