The summit of a volcano is 10 kilometers above ocean floor. if the ocean floor has an elevation of -5 kilometers, which statement describes the elevation of sea level and the summit?

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.