One diamond in the safe deposit box is worth $12,000. If each of the other jewels are worth $2,160, how many total jewels are inside the box?

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.