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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