Kimberly is playing on a trampoline. the mat of the trampoline sits 3 feet off the ground. as kimberly lands on the trampoline, the mat flexes 2.2 feet

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.