An athlete is planning to run a certain distance in three days. • The first day, he is planning to run 1/3 • The second day, he wants to run 3/4 the distance. The distance left. • The last day, he plans to run the last 4 miles. Part A: Create an equation that represents the situation and can be used to solve for x, the total distance that the athlete is x s planning to run in the three days. Enter your equation in the first response box. Part B: Enter the total distance, in miles, that the athlete is planning to run in the three days in the second response box.