Liam has a bag with x number of collectible coins. Mia has two bags, and the number of collectible coins in each one is 3 greater than the number of collectible coins in Liam’s bag. Which of the following represents the total number of collectible coins that Mia has in her two bags combined?

1: 6x
2: 3x + 2
3: 2x + 3
4: 3(x + 2)
5: 2(x + 3)