Cheyenne is playing a board game. Her score was −225 at the start of her turn, and at the end of her turn her score was −405. What was the change in Cheyenne's score from the start of her turn to the end of her turn? The change was__ points

Triangle xyz has vertices x(1,3), y(0,0)

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude

Two airplanes start at the same place and travel in opposite directions, one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?