Borrowed $100000 at rate of 5% for 30 years, compounded annually. 

What monthly payment is needed to amortize (pay off) the loan? Show all work.

How much would your monthly payment be if you pay off the loan in 15 years? Show all work. Answer question 
How much did you pay in the ?rst case {30 years). and how much was wasted on interest?
How does this compare to the 15 year case? Show all work. Answer question