The difference between seven times a number and six

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?