100分求一道数学题,When 30 orange trees are planted per acre each tr
100分求一道数学题,
When 30 orange trees are planted per acre each tree yields 150 oranges For each additional tree per acre,the yield decreases by 3 oranges per tree.Express the total yield of oranges per acre,Y ,as a function of the number of trees planted per acre,x,if x x15 30.
When 30 orange trees are planted per acre each tree yields 150 oranges For each additional tree per acre,the yield decreases by 3 oranges per tree.Express the total yield of oranges per acre,Y ,as a function of the number of trees planted per acre,x,if x x15 30.
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你能帮帮他们吗