12. Write an expression for the phrase 3 times the quantity 7 less than m A. 3(m - 7)
B. 317-m)
C. 3(m + 7)
D. 3 + m - 7

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.