When a mortgage is for 15 years at a 4.5% interest and the amount borrowed is $200,000 and closing costs are 4% of the new mortgage paid at closing by the buyer what is the...a) monthly mortgage principal and interest payment. b) balance of the mortgage after 5 years? c) total interest paid on the mortgage over ther 15 years? d) what is the first year's total mortgage interest tax deduction, if this is a home? e) what are the closing costs at the time of purchase? f) what is the APR for this mortgage?