Please help me

Juan loves to ride his bicycle. Today he is cruising along Exeter Street, which is flat ground, at 20 miles per hour (29.33 feet per second). On his front wheel is a reflector 1 1 inches from the center of the wheel. Juan's bike has 26 inch wheels to the radius is 13 inches). Assume that the reflector is farthest from the ground when time t =0. Let h be the height of the reflector above the ground (in feet), I be the elapsed time (in seconds) and x the distance (in inches) Juan has traveled in : seconds. a. How far does Juan travel (in inches) when the wheel makes one complete revolution? b. Find h(x), the height of the reflector, in terms of the distance traveled. C. What is the height of the reflector after Juan has ridden 20 feet? d. Find h(t), the height of the reflector, in terms of the time t. What is the height of the reflector after Juan has ridden for 5 minutes? Pre-Calculus with Trigonoman