Solution: Compute $ f(4) = 16 - 12 + m = 4 + m $. Compute $ g(4) = 16 - 12 + 2m = 4 + 2m $. Set $ 4 + m = 2(4 + 2m) $. Expand: $ 4 + m = 8 + 4m $. Rearrange: $ -4 = 3m $. Thus, $ m = -rac43 $. - Groen Casting