Harriet Marcus is concerned about the financing of a home. She saw a small cottage that sells for $$50,000.$ Assuming that she puts $20\%$ down, what will be her monthly payment and the total cost of interest over the cost of the loan for each assumption? $($Use the Table $15\mathrm{.}1)25$ years, $3\%$ Monthly payment, total cost of interest, $25$ years, $3\mathrm{.}5\%$ Monthly payment, total cost, $25$ years, $3\mathrm{.}75\%$ Monthly payment, total cost of interest, $25$ years, $4\%$ monthly payment, total cost of interest

Note: Do not round intermediate calculations. Round your answers to the nearest cent.