Return to the Cox Electric spreadsheet. Build a table of profits based on different volume levels by doing the following: In cell C15, enter a volume of 20,000. Look at each formula in row 14 and decide which references should be absolute or relative for purposes of copying the formulas to row 15. Make the necessary changes to row 14 (change any references that should be absolute by putting in $). Copy cells D14:I14 to row 15. Continue this with new rows until a positive profit is found. Save your file as Cox-Breakeven.