Need help pls

For 2022, Swifty Company has cost of goods manufactured of $ 499100, beginning finished goods inventory of $ 24800, and ending finished goods inventory of $ 19500. How much is cost of goods sold? $ 543400 $ 493800 $ 454800 $504400 As production manager, Mr. Bis asked to track the manufacturing cost per unit on the factory floor. Total manufacturing costs were $ 98000 before considering factory maintenance salaries of $ 13000 and $ 53000 of factory depreciation. How much is the calculation of manufacturing cost per unit if 500 units had been produced in the current quarter? $ 328 $ 222 $ 302 $ 196 #Machine Malntenance Hours (X) Costs (Y) Month Jan 3500 $450 Feb 4600 $ 680 Mar 8000 $ 520 Apr 7100 $ 620 May 6200 $570 Jun 8000 $ 900 Jul 3500 $ 840 Aug 5700 $ 620 Using the high-low method, what is the slope for this set of data? $0.10 $ 10.00 $ 8.89 $ 450.00