The distance traveled by a car at a constant rate is proportional to the time spent driving. In the equation d = 45t, d represents the distance (in miles) and t represents the time (in hours). A. What is the constant of proportionality? ____ miles per hour b.How far will a car travel in 3 hours?____ miles

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The constant of proportionality should be 45 miles per hour, and the car should travel 135 miles in three hours.

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