1. Using the table below, calculate total cost (TC), average fixed cost (AFC), average variable cost (AVC), and average total cost (ATC). What is the efficient output level?

Visits	TFC	TVC	TC	AFC	AVC	ATC
0	$4,000	$0	$4,000	0	0	0
25	$4,000	$250	$4,250	160	10	170
50	$4,000	$500	$4,500	80	10	90
75	$4,000	$750	$4,750	53.3	10	63.3
100	$4,000	$1,000	$5,000	40	10	50
125	$4,000	$1,875	$5,875	32	15	47
150	$4,000	$3,150	$7,150	26.7	21	47.7

Total Cost= TC= TFC + TVC

Average Fixed Cost (AFC)= FC/Visits= ATC - AVC

Average Variable Cost (AVC)= Total Variable Cost / Visits

Average Total Cost (ATC) = TC/Visits = VC/Visits + FC/Visits