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Kim hires students to mow lawns at $400 a week. She leases equipment that costs $450 a week.

The table gives Kim's a total product and total cost schedules

At what output is Kim's average total cost at a minimum?

Note: if two quantities have the same average total cost, we take the average quantity as that at minimum average total cost.

Kim's average total cost is at a minimum when she mows _____ lawns a week. Round answer to an integer.

pur-new-sol

Average total cost=Total costTotal ProductAverage total cost=Total costTotal Product

Labor (Students)	Total product (Lawns per week)	Total cost (dollar perweek)	Average total cost
0	0	450	NA
1	3	850	283
2	9	1,250	139
3	14	1,650	118
4	18	2,050	114
5	21	2,450	117
6	23	2,810	122

At what output is Kim's average total cost at a minimum?

Kim's average total cost is at a minimum when she mows 4 lawns a week.

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