a family had a $145,539 25 year mortgage at 7.5% comppounded monthly

please help me solve this question step by step

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a family has a $145,539 25-year mortgage at 7.5% compounded monthly

A) find the monthly payment and the total interest paid

B) suppose The family decides to add an extra $100 to its mortgage payment each month starting with the very first payment how long will it take the family to pay off the mortgage? How much interest will the family safe?

3.4.53-BE Question Help A lytus a $145,539,25 year more compounded monthly (A) Find the month payment and the total westpad B) Suppose the family decides to add an extra $100 to its mortgage payment och month stating Tarly to pay off the moto How much will the way ? (A) Monthly payment Round to two decal ces) A family has a $145,539, 25-year mortgage at 75% compounded monthly (A) Find the monthly payment and the total interest paid. (B) Suppose the family decides to add an extra $100 to its mortgage payment each month starting with the very first payment. How long will it take the family to pay off the mortgage? How much interest will the family save? (A) Monthly payment: $ (Round to two decimal places.)