If M is the midpoint of OR, and OM = 3x + 8 and MR = 8x – 17, solve for x and find the length of OR. (I need a step by step answer so in the future I know how to solve geometry equations like this)

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?