Eri C.

asked • 01/29/21# math- need the domain

** Sketch a graph of the story (x measures time and y measures elevation off the ground) and describe the domain. Justin is sponsored by BMX. He spends all his free time **

**riding his bike and perfecting his moves. Yesterday his friend Thompson built a World Class bike course in his backyard. Thompson timed Justin on the course. It took Justin 15 seconds to get through the course. He started at the top of a 10 ft. ramp, it took him 3 seconds to get to the bottom of the ramp, where he rode on the ground for 5 seconds to the back side of the yard. When he arrived at the back side of the yard, he jumped his bike up on a pipe which was 2 feet off the ground. He slid across the pipe for 3 seconds. Then landed on the ground. The last 4 seconds he launched off a second ramp that was 12 feet tall. He did a backflip off the 12 foot ramp and landed on the platform at the end of the course. **

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