. You have been evaluating cell phone providers. Double Mint Mobile has a $100 startup fee and costs $30 per month for a cell phone plan. BT&T has a $20 startup fee and costs $50 per month for a similar cell phone plan. After how many months will both cell phone plans cost the same?

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?