Suppose at the base of a hill a sign reads “Elevation 3500 Feet.” The road goes straight up the hill to the top, which is 3 horizontal miles from the base. At the top, a sign reads “Elevation 4100 Feet.” a) The growth rate in the elevation is ft/mile. (Give your answer as a whole number.) b) The linear relation between the elevation ‘E’, in feet, and horizontal distance ‘h’ , in miles, is E = h + 3500 ; (Give your answer as a whole number.)