4. (8 pts) In columns G through J, calculate the value of the shipping rebate for each dealer for each quarter. If you use proper cell referencing, you should be able to write a formula in cell G17 that can be copied down the column and across the row. Remember, dealers will only receive rebates in quarters where their actual quarterly sales volumes met or exceeded expected sales volumes located in cells C4:F4. In a column K determine the total value of the shipping rebate for all four quarters for each dealership.