please include the formal at the type to explain this and tell me why did we use it please

Review the "Formula Refresher" worksheet for forumlae and hints. Q1. Fill in the missing values in following table. Make sure to use the "formula" feature. Quantity of apples , Total Cost (TC) . Fixed Cost (FC) . Variable Cost (VC) . Marginal Cost (MC) . Average Fixed Cost (AFC) , Average Variable Cost (AVC) . 0 $ 400.00 $ 400.00 un 0.10 #DIV/O! #DIV/O! 10 $ 500.00 S 500.00 S 0.13 S 50.00 20 $ 580.00 S 580.00 S 0.08 ur un 29.00 30 700.00 S 700.00 S 0.07 S 23.33 40 $ 850.00 S 850.00 0.06 S 21.25 50 $ 1,030.00 $ 1,030.00 S 0.05 S 20.60 60 $ 1,250.00 $ 1,250.00 ur 0.05 un 20.83