Aspecial box designed to hold an antique artifact is shaped like a triangular prism the surface area of the box is 421.2 square inches the height of the base triangle is 7.8 inches and each side of the base triangle is 9 inches long what is the height of the box?

Which two properties of equality could zoe use to finish solving for x? the equation is 3x - 4 = -10 for x so a either the addition or subtraction property of equalityb ether the multiplication or division property of equality c ether the addition or division property of equality d ether the subtraction or division property of equality just a simple a b c or d plz.