so, if there are x trees over 20, then the yield per tree is 60-2x
The total ranch yield is thus y = (20+x)(60-2x)
The annual yield per walnut tree is fairly constant at 60 pounds per tree when the number of trees per acre is 20 or fewer. For each additional tree over 20, the annual yield per tree for all trees on the acre decreases by 2 pounds due to overcrowding. Find the annual yield of walnuts on the acre as a function of the number of walnut trees. (Assume that the number of walnut trees per acre is greater than 20.)
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sorry -- not total ranch yield -- just the total yield per acre.
1 answer