The tax on the customer's check is 20% of $15.00, which is $15.00 x 0.20 = $3.00
So the total amount the customer pays is $15.00 + $3.00 = $18.00
The amount of change the customer should receive is $20.00 - $18.00 = $2.00
Therefore, Jason's tip is $2.00
#### 2
The answer is: 2
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Jason waits on a customer whose check comes to $15.00. Jason's state applies a 20% tax to restaurant sales. If the customer gives Jason a $20 bill and tells him to keep the change, how much is Jason's tip?

### Answer:
