A loan of $$2,900$ for a new, high$-$end laptop computer is to be repaid in $17$ end$-$of$-$month payments $($starting one month from now$).$ The monthly

payments are determined as follows.

What nominal and effective interest rates per year are actually being paid? Hint: Draw a cash$-$flow diagram from the perspective of the lender.

The nominal interest rate is $|,\%$ per year. $($Round to one decimal place.$)$