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2022
®
AP Calculus AB
Free-Response Questions
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AP® Calculus AB 2022 Free-Response Questions
CALCULUS AB
SECTION II, Part A
Time—30 minutes
2 Questions
A GRAPHING CALCULATOR IS REQUIRED FOR THESE QUESTIONS.
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2
AP® Calculus AB 2022 Free-Response Questions
1. From 5 A.M. to 10 A.M., the rate at which vehicles arrive at a certain toll plaza is given by
A (t ) = 450 sin (0.62t) , where t is the number of hours after 5 A.M. and A (t ) is measured in vehicles per hour.
Traffic is flowing smoothly at 5 A.M. with no vehicles waiting in line.
(a) Write, but do not evaluate, an integral expression that gives the total number of vehicles that arrive at the
toll plaza from A.M. ( ) to A.M. ( ).
6 t = 1 10 t = 5
(b) Find the average value of the rate, in vehicles per hour, at which vehicles arrive at the toll plaza from
A.M. ( ) to A.M. ( ).
6 t = 1 10 t = 5
(c) Is the rate at which vehicles arrive at the toll plaza at A.M. ( ) increasing or decreasing? Give a reason
6 t
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