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A toll bridge charges $1.00 for passenger cars and $2.75 for other vehicles. suppose that during daytime hours, 60% of all vehicles are passenger cars. if 20 vehicles cross the bridge during a particular daytime period, what is the resulting expected toll revenue? [hint: let x = the number of passenger cars; then the toll revenue h(x) is a linear function of x.] $

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20 Cars on the bridge
60% of 20 ＝ 12 Passenger Car
12×1.00＝$12
20-12＝8 Other Vehicles
8×2.75＝$22
12+22＝$34

So expected revenue is $34

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