Posted by **JOY** on Wednesday, October 12, 2011 at 11:51am.

How do you set up this?I am lost

Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a constant rate. At 3:00 P.M. it is 55 miles north of a city. At 4:15 P.M. it is 80 miles north of the city. If d represents the distance in miles, and t represents the time in hours, how many miles north of the city will the train be at 5:45 P.M.?

MY answer book has - I don'tknow how they came up with these #'s

d=64t+55 d=231 miles

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