13. I have 22 nickels, dimes and quarters worth $3.45. There are twice as many quarters as nickels. Find the number of each coin.

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"