I need to learn it so need full work asap

Question 1.5 (10 Points): ( 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 |3 months prior. Month Units Jan 18,000 Feb 22,000 Mar 16,000 Apr 18,000 |May 20,000 Answer 1.5 (Show your work not just the answer)