If a rectangular piece of paper ABCD. Point M is the midpoint of the diagonal AC, and point E is on the side of BC, fold △DCE along the line DE so that point C falls on the diagonal AC at point F , connect DF, EF. If MF=AB, then ∠DAF =? degree.

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)