Geometry I need help finding what this is asking and how to get the answer as well as the answer

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit

What is an alternate exterior angle

Solve for n? [tex]z = \frac{3}{4} mn[/tex]