Linear Equations with explanation plz

What is the standard form of -5x^2+2x^4-11+x^3+3x

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.

Nikolas calculated the volume of the prism. his work is shown below.