The annual yield per walnut tree is fairly constant at 100 pounds per tree when the number of trees per acre is 30 or fewer. For each additional tree over 30, the annual yield per tree for all trees on the acre decreases by 2 pounds due to overcrowding. How many walnut trees should be planted per acre to maximize the annual yield for theacre? What is the maximum number of pounds of walnuts peracre?

Plant trees per acre to maximize annual yield for the acre.

The maximum annual yield is pounds of walnuts per acre.