Identify the Properties of Mathematics 1) The multiplicative inverse of a number, a is 1/a so that a x 1/a = 1

Is this a polynomial function? i need to know asap

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?

The graph shows the amount of total rainfall at each hour what was the total rainfall amount after three hours