Two trains leave the station at the same time, one heading east and the other west. the eastbound train travels at 85 miles per hour. the westbound train travels at 65 miles per hour. how long will it take for the two trains to be 270 miles apart?

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.