Atraveler drove 150 miles at 50 miles per hour and then 160 miles at 40 miles per hour. how many hours did the drive take altogether?

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)