please explain

3. This elevation map shows the elevation of the Boston Marathon course. There is an iconic hill called Heartbreak Hill on the course. It is just before mile 21, notice the incline on the map below between the 20 and the 22. Starting Elevation: 465 Ending Elevation15 Minimum Elevation: 13 IL Maximum Elevation: 465 ft. Love Selo Me a. Mark an X on this area of the map. Why would it be called Heartbreak Hill? (3 points) b. On Heartbreak Hill the elevation changes from 146ft at the base of the hill to 237ft at the top of the hill over a horizontal distance of 2744 ft. What is the percentage grade of this hill? Round to the nearest tenth of a percent. (3 points) (I recommend drawing a sketch of what is happening here) c. How far will a runner actually run up this hill? Round to the nearest tenth of a foot. (3 points) d. When the marathon officials survey the course to achieve 26.2 miles which distance will they use? Will they use 2744ft or the distance you found in part c? Explain your answer. (3 points) 3 3. This elevation map shows the elevation of the Boston Marathon course. There is an iconic hill called Heartbreak Hill on the course. It is just before mile 21, notice the incline on the map below between the 20 and the 22. Starting Elevation: 465 Ending Elevation15 Minimum Elevation: 13 IL Maximum Elevation: 465 ft. Love Selo Me a. Mark an X on this area of the map. Why would it be called Heartbreak Hill? (3 points) b. On Heartbreak Hill the elevation changes from 146ft at the base of the hill to 237ft at the top of the hill over a horizontal distance of 2744 ft. What is the percentage grade of this hill? Round to the nearest tenth of a percent. (3 points) (I recommend drawing a sketch of what is happening here) c. How far will a runner actually run up this hill? Round to the nearest tenth of a foot. (3 points) d. When the marathon officials survey the course to achieve 26.2 miles which distance will they use? Will they use 2744ft or the distance you found in part c? Explain your answer. (3 points) 3