Ireally need on these 3 questions. can someone me fast i have bunch to do by tonight

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

What is fraction that is equivalent to 3/8

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?