Which is the interquartile range of the number of books read by the students in Mr. Ford's class?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?