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9-89.

Sketch two graphs, one to show Anne’s rate over time and one to show the distance she traveled over time.

First quadrant, x axis labeled time, minutes, scaled from 0 to 75, y axis labeled speed, mph, scaled from 0 to 75, continuous linear piecewise, starting at (0, comma 30), turning as follows: at (15, comma 30), at (15, comma 60), at (45, comma 60), at (45, comma 0), at (60, comma 0), at (60, comma 30), ending at (75, comma 30).

First quadrant, x axis labeled time, minutes, scaled from 0 to 75, y axis labeled distance, miles, scaled from 0 to 45, continuous linear piecewise, starting at (0, comma 0, turning as follows: at (15, comma 7.5), at (45, comma 37.5), at (60, comma 37.5), ending at (75, comma 45).