What numbers add to 8 and multiply to 11

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

Someone which statements are true? check all that apply.