Question

on some interstate highways the maximum speed a car may drive is 65 mph. A tractor trailer may not drive more than 55 mph. The minumum speed for all vehicles is 45 mph. Write an inequality to represent the allowable speed s at which a tractor trailer may travel on an interstate highway.

Answer 1

Let x = speed (in mph)

45 <= x <= 65 for a car
45 <= x <= 55 for a tractor



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