17. In the past, Marcie's father rode his bike 108 miles in 7.5 hours. Her mother rode the same distance in 8 hours. Marcie plans to ride her bike 108 miles at a steady rate of 18 mph for y hours. Will she match her father's or mother's time? Use the equation 108  y = 18 to justify your answer. 

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Lets find the time it will take Marcie to ride 108 miles at a steady rate of 18 mph We can us... View the full answer