Let f: double-struck r4 → double-struck r and c(t): double-struck r → double-struck r4. suppose ∇f(1, 1, π, e6) = (0, 1, 5, −2), c(π) = (1, 1, π, e6), and c'(π) = (19, 11, 0, 1). find d(f ∘ c)/dt when t = π.

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work