A used car salesperson receives a commission of 1/12 of the sales price of the car for each car he sells. What would the sales commission be on a car that sold for $21,999?

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.