SOLUTION: You are planning a 400-mile car trip. A portion of the trip will be on interstate highways where you average 65 miles per hour. The remainder will be on secondary roads where you a
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Question 150496: You are planning a 400-mile car trip. A portion of the trip will be on interstate highways where you average 65 miles per hour. The remainder will be on secondary roads where you average 50 miles per hour. Let x represent the portion traveled on the interstate.
1. write an expression for the total time for the trip
2.write your anwser to exercise 28 as a single rational expression. Answer by josmiceli(19441) (Show Source):
