Can someone please help me on 3-5?! Thanks.

National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Month Feb. Mar. Apr. May Jun. Jul. Aug. Sales (000) Units 14 20 11 22 21 25 16 b. Forecast September sales volume using each of the following: (1) A linear trend equation.(Round your intermediate calculations and final answer to 2 decimal places.) Yt 22.15 thousands (2) A five-month moving average. (Round your answer to 2 decimal places.) Moving average 19 thousands (3) Exponential smoothing with a smoothing constant equal to 20, assuming a March forecast of 17(000). (Round your intermediate forecast values and final answer to 2 decimal places) Forecast thousands (4) The naive approach. Naive approach thousands (5) A weighted average using.70 for August, 10 for July, and 20 for June. (Round your answer to 2 decimal places.) Weighted average thousands