You get (2x+3)(4x^2-6x+9) when you factor 8x^3+27=0. You just divide by 3 to simplify it.
The unit rate would be 3 trucks per 1 hour you can find this by dividing 18 and 6 by 6
B. 3 to 5 & D. 7 to 12. because unchanging, in this case, means not moving.(or the flat lines)
I think u can just divide by 16 to get it because each ounce is 16
