Simplify

-6 + { 14 + { 60 - 9 ( 1 + 3 ) { }

The verbal translation for the difference of m and 7 increased by 15

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 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.