Tiffany put a $550 item on layaway by making a 15% down payment and agreeing to pay $20 a month. how many months sooner would she pay off the item if she increased her monthly payment to $80?

Fred and gene are hang gliding. fred is 700 feet above the ground and descending at 15 ft/s. gene is decending as shown in the table. interpret the rates of change and initial values of the linear functions in terms of the situations they model. show all work. freds equation is f(x)=-15x+700. ( genes is the table attached)