Start by finding her hourly rate. 32.50/5 = 6.5
Next times 6.5 * 8 = 52
Working 8 hours she would make $52
I wish I made that much.
0.2 x 40
=8
(change the percentage to a decimal)
Answer: 700,000 + 20,000 + 80 = 720,080
Step-by-step explanation:
Answer with positive exponent =
or 
Answer with negative exponent = 
===========================================================
Explanation:
The rule we use is

If we multiply two exponential expressions with the same base, then we add the exponents.
The base for each is 5. The exponents 4 and -7 add to -3.
This means

To convert to a positive exponent, we apply the reciprocal to the base. We go from 5, aka 5/1, to 1/5.
So, 
X^2 = 24^2 + 7^2
x^2 = 576 + 49
x^2 = 625
x = 25