HELP QUIZ DUE TONIGHT

It would be 1/8^4

Step-by-step explanation:

First, you add up the exponents. 3 + (-7) = -4

Then, as our new exponent is negative, it can be send to the denominator with a positive exponent.

Hope that this was helpful.

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.