Acar moving at a constant speed passes a timing device at t=0. after 8 seconds the car has traveled 840 feet. what linear function in the form y=mx+b represents the distance in the feet, d, the car has traveled any number of seconds, t, after passing the timing device?

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?