Which function represents the same relationship ?

Help:(

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Factor the polynomial. b^2 + 4b + 4

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?