Using the data in "mowers.csv," mowers-1.csvDownload mowers-1.csv

1. Run a regression model with "Sales" as the response variable, and "Temperature," "Advertising," and "Discount," as the predictor variables.
2. Comments on the results.
3. Drop one variable at a time and see which model provides the best fit based on adjusted-R².
4. Repeat Part C. Which model provides the best fit based on F-test.

Sales	Temperature	Advertising	Discount
17235	33	15	5.0
19854	42	25	5.0
45786	58	40	10.0
49745	67	70	20.0
65894	73	75	20.0
64145	78	72	15.0
57845	82	67	15.0
54250	83	65	10.0
61764	76	68	20.0
59875	69	72	20.0
38123	56	35	15.0
21237	45	20	10.0
19567	31	17	5.0
20451	41	24	7.5
46896	56	43	12.5
51487	68	72	25.0
68975	72	79	25.0
66412	79	76	20.0
59874	81	65	12.5
53651	84	63	12.5
62478	77	70	15.0
59678	67	69	25.0
37123	55	37	15.0
22571	44	21	5.0