5 hours
715/11 = 65
325/65 = 5
Amount to be paid back = $ 88,624.36
<u>Step-by-step explanation:</u>
Principal amount = $ 40,000
Rate of interest = 7.5%
Number of years = 11

Plugin the values as,




Answer:
The square root is 12.649.....
It's a geometric sequence.

It's the sum for term 4 through term 15.
There's more than one way to combine them really
but an obvious one will be