Which of the following is an EQUATION? A: 20(p + 2) + 16(-3 - p)
B: -10 + 2
C: 6x + 4 - 2x = 20
D: 9m + 4 - 7m + 4m²

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Can someone me out here and the tell me the greatest common factor

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?