The density of cars (in cars per mile) down a 24-mile stretch of the Pennsylvania Turnpike is approximated by 312 (2+ sin(4√x+0.2)) at a distance a miles from the Breezewood toll plaza. 1. Write a Riemann sum that approximates the total number of cars on this 24-mile stretch. To get x₁, type x_i. ΣΔ i=1 2. The total number of cars on the 24-mile stretch is equal to cars.

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