Hi,

The number of trees in each row is 20 more than twice the number of rows.

Question states***orchard that contains 150 trees.

      | y =

 

   2x^2 + 20x - 150 = 0

    x^2 + 10x - 75 = 0

   (x+15)(x-5) = 0

          x = 5, throwing out the negative solution for number of rows

 x(rows) = 5  and y(trees in @ row) = 30 

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