Meghan bought 3 pounds of apples that cost x dollars per pound. she gave the cashier a $20 dollar bill which equation could Meghan use to find the amount of change,y she should receive?​

Answer :

Answer:

a = 3x - 20

Step-by-step explanation:

It is pretty self explanatory, but if you are still unsure how I got the answer I can always explain in the comments.