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Jackson Farms have allotted a certain amount of land for cultivating soybeans, corn, and wheat. Cultivating 1 acre of soybeans requires 4 labor-hours, and cultivating 1 acre of corn or wheat requires 7 labor-hours. The cost of seeds for 1 acre of soybeans is $12, for 1 acre of corn is $21, and for 1 acre of wheat is $9. If all resources are to be used, how many acres of each crop should be cultivated if the following hold?
1,200 acres of land are allotted, 7,200 labor-hours are available, and $19,200 is available for seeds.
acres of soybean: __________
acres of corn: __________
acres of wheat: __________
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