At a tree farm, there are 9 rows of 36 spruce trees. in each row, 14 of the spruce trees are blue spruce. how many spruce trees are not blue spruce?

Based on the problem above, it is given that in every row, there are 36 spruce trees and there is a total of 9 rows. So 36 x 9, would be 324. There is a total of 324 spruce trees. And in each row, there are 14 blue spruce. So 36 - 14, there are 22 non blue spruce trees per row. So 22 x 9 rows, is equal to 198. Therefore, there are 198 spruce trees that are not blue. 

The answer should be d.