PLEASE help me. I can't figure it out. Please give a real answer :)

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

What value of x is in the solution set of 4x – 12 s 16 + 8x?

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