Fill in the table below

Quantity	0	1	2	3	4	5	6
Variable Cost ($)	0	15		60	90	125	160
Fixed Cost ($)	40	40	40	40		40	40
Total Cost ($)	40		75	100	130	165	200
Average Total Cost ($ per unit)	- -	55	37.5	33.3	32.5		33.3
Average Variable Cost ($ per unit)	- -	15	17.5	20	22.5	25
Marginal Cost ($ per unit)	- -	15	20		30	35	40

fill in the blank please

If the firm in the table charges a price of $35 per unit, what is its profit-maximizing quantity?

(If you get it right, I will go in and manually give you the extra credit at the end of the week since there isn't a way to program extra credit into the Canvas auto-grading)