For example, in cell 830 enter the formula *- 820". Notes: In the text, variances are always displayed as positive numbers. To accomplish this, you can use the ABS) function in Excel. For example, the formula in cell C31 would be *-ABS(E31-831) Cells D31 through D39 and G31 through G39 already contain formulas to compute and display whether variances are Favorable or Unfavorable. Do not enter data or formulas into those cells-if you do, you will overwrite these formulas. After entering formulas in all of the cells that contained question marks, verify that the amounts match the numbers in the example in the text Check your worksheet by changing the revenue in cell D4 to $16.00, the cost of ingredients in cell D5 to $6.50, and the wages and salaries in cell B6 to $10,000. The activity variance for net operating income should now be $850 U and the spending variance for total expenses should be $410 U. If you do not get these answers, find the errors in your worksheet and correct them Save your completed Applying Excel form to your computer and then upload it here by clicking "Browse." Next, click "Save." You will use this worksheet to answer the questions in Part 2. Revise the data in your worksheet to reflect the results for the subsequent period as shown below: A 1 Chapter 9: Applying Excel B C D E 2 3 Data 4 Revenue $ 16.50 q 5 Cost of ingredients $ 6.25 q 6 Wages and salaries $ 10,400 7 Utilities 8 Rent 9 Miscellaneous SSS $ 800 + $ 0.20 q $ 2,200 $ 600 + $ 0.80 q 10 11 Actual results: 12 Revenue $ 30,080 13 Cost of ingredients $ 11,150 14 Wages and salaries $ 10,275 15 Utilities $ 1,150 16 Rent $ 2,200 17 Miscellaneous $ 2,005 18 19 Planning budget activity 1,700 meals served 20 Actual activity 1,800 meals served a. What is the activity variance for revenue? (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance)). The amount of the activity variance for revenue b. What is the spending variance for the cost of ingredients? (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (ie., zero variance)). The amount of the spending variance for the cost of ingredients c. What is spending variance for wages and salaries? (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance)). The amount of the spending variance for wages and salaries d. What is spending variance for total expenses? (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance)). The amount of the spending variance for total expenses