solve only for #12 the second image

and solve for #13

The manager of the Petroco Service Station wants to forecast the demand for unleaded gasoline next month so that the proper number of gallons can be ordered from the distributor. The owner has accumulated the following data on demand for unleaded gasoline from sales during the past 10 months. Compute an exponentially smoothed forecast with an a value of .30. According to the result from Excel and/or POM-QM, the forecast for the month of January would be (type number only, two decimals) Month Gasoline Demanded (gal.) October November December January February March April May June July 800 725 630 500 645 690 730 810 1.200 980 142.54 et Question 12 0/1 pts In the Petroco Service Station problem, compute an exponentially smoothed forecast with an a value of .50. According to the result from Excel and/or POM-QM. the forecast for the month of August is (type number only, two decimals) 923.18 Question 13 0/1 pts In the Petroco Service Station problem, for the exponentially smoothed forecast with an a value of.50, compute the mean absolute deviation (MAD) via Excel and/or POM-QM. It is (type number only, two decimals)