Movie Theatre A has a popcorn machine with a 100-gallon capacity, and sells 3 gallons of popcorn per hour. Movie Theatre B has a popcorn machine with a 150-gallon capacity, and sells 5 gallons of popcorn per hour. Write an equation to show when the two popcorn machines will have the same amount of popcorn left. Use a as your variable. (1 point)

0 100 - 3x= 150 - 5x
O 100 ÷ 3x= 150 + 5x
О 3x- 100 = 5x- 150
0 150 + 3x= 100 + 5x