help me answer each question

Question 1.6 Calculate the Mean Absolute Deviation (MAD) of the forecast error. (Show your work not just the answer) Question 1.5 Compute the sales forecast for June using a 3-month weighed moving average forecast using 50% for the previous month, 30% for 2 months prior, and 20% for 2 months nrior (Show your work not just the answer) Compute the sales forecast for June using a 4-month simple moving average iorecast I (Show your work not just the answer) Question 1.9 Complete the Projected On Hand Inventory Row. Reorder Quantity = 40 Units; Lead Time = 2 Weeks; Safety Stock = 10 Units Answer 1.9 Week 1 Week 2 Week 3 Week 4 Question 1.8 What number should be placed in cell presently filled with an X ? Reorder Quantity = 40 Units; Lead Time = 2 Weeks; Safety Stock = 10 Units Question 1.7 Calculate the Mean Absolute Percent Error (MAPE) of the forecast error. (Show your work not just the answer)