gabe goes to the mall. if n is the number of items he bought, the expression 11.78n + 20 gives the amount he spent in dollars at one store. then he spent 29 dollars at another store. find the expression which represents the amount game spent at the mall. then estimate how much have spent if he bought 4 items.

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)