Answer is.. 144.
2 x 4 = 8
9 x 8 = 72
72 x 2 = 144
72*12 = 2*2*2*2*2*3*3*3 = 2^5*3^3
After, thorough research I believe that there are 265 pine trees and 0 elm trees since decidous and semi-decidous do not grow near conifers.
Answer is C) 6
36 + 3(4x - 9) = 6(2x + 1)
36 + 12x - 27 = 12x + 6
12x - 12x = 6 - 9
0 ≠ -3
No solution