Integration 1: Area and Distance 9. The function h(t), at right, models velocity during a bicycle trip in which Andrei traveled north then south then north again along a road. The area of each shaded region is given on the graph (in parenthesis). At t = 3 hours, Andrei is km north of his starting point. Explain your calculation. A student looks at the graph in question 9, and says, "After t = 2 hours, Andrei is 24 km north of his starting point". Do you agree or disagree with this student? Justify your answer. 20 y (km/h) 10 -10 -20 (10) y=h(t)/ (14) (19) 3

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