When is the constant of proportionality the same as the unit rate when comparing two quantities? always

only when the two quantities are directly proportional

only when the two quantities are indirectly proportional

never

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment