Carlene’s family was driving for their summer vacation. they were planning to visit several different places, so the trip was going to cover 1,440 miles. in the first 2 days, they covered 320 miles. (the rest of their time was spent sightseeing that day). if they continue to travel at this rate, how many days will it take them to drive their entire distance of 1,440 miles? use proportions and cross products to find the answer.