Single$-$payment loan repayment$$Personal Finance Problem$$A person borrows $$$$150$ that he must repay in a lump sum no more than $8$ years from now. The interest rate is $9\mathrm{.}4\%$ annually compounded. The borrower can repay the loan at the end of any earlier year with no prepayment penalty.

a$.$What amount will be due if the borrower repays the loan after $1$year$?$

b$.$How much would the borrower have to repay after $3$ years$?$

c$.$What amount is due at the end of the eighth $$year$?$