Ef=4x-15,fg=5x+7 and eg=46 find the value of ef

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

How can you tell when x and y are not directly proportional?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0