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

### Instruction:
A pen costs $9 more than a pencil. If a pencil costs $2, find the total cost of both items.

### Response:
A pen costs $9 more than a pencil, so the pen costs $2+9=$<<2+9=11>>11
So the total cost is $2+$11=$<<2+11=13>>13
#### 13

