A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 83 feet and then drops 42 feet. On the second hill the coaster climbs 128 feet and then drops 90 feet. How far above the ground is the coaster after the second hill?

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2