Answer:
20
Step-by-step explanation:
Use the Pythagorean theorem to solve this problem. So, 81+x^2=1681. ( Pythagorean theorem: a^2+b^2=c^2). x^2=1600. x=40.
Answer:
The bank charged 56 dollars in interest
Well you will just subtract 91 - 7 which equals 84.
So 7 + 84 = 91
