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Mathematics 9 Online
OpenStudy (anonymous):

Please Help!!!! Marsha is driving home to Rochester on the highway after having to attend a conference in Boston. when she passes a sign that says " Rochester 120 miles" she is going 55mph and is so happy she steps on the accelerator. 1.5 hours later she passes a sign that says"Rochester 30 miles" and is going 68 mph. Let D(t) be Marsha's distance from Rochester t hours after she passes the first sign. D(0)=? D(1.5)=?

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