Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Morgan goes to the drive-thru and orders his lunch.  He gets a hamburger for $4, onion rings for $2 and a smoothie for $3. If he pays with a $20 bill, how much change does he receive?

### Response:
The total cost of his lunch is 4 + 2 + 3 = <<4+2+3=9>>9 dollars.
His change is 20 - 9 = <<20-9=11>>11 dollars.
#### 11

