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John travels 56 miles in 3 hours before taking a break. He then travels 38 miles in 2.5 hours. Convert his average rate of miles per hour (rounded to the nearest hundredth) to meters per millisecond expressed in scientific notation rounded to the nearest hundredth. (1 km = 0.621371 mile)

A 1212

1212Begin by computing the average rate, which is the total distance divided by the total time traveled:

Set up a dimensional analysis that converts the miles to meters and the hours to milliseconds:

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