Evaluate 6^2 - (9 divided by x) when x = 3

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square