Table:
|  | At December 31, |  |
| --- | --- | --- |
|  | 2019 | 2018 |
| Cash | $437 | $268 |
| Foreign government treasury bills | 37 | 32 |
| Money market funds | 5,320 | 3,925 |
| Cash and cash equivalents | $5,794 | $4,225 |
Paragraphs:
4. Cash and Cash Equivalents
The following table summarizes the components of our cash and cash equivalents (amounts in millions):
Question:
What was the change in cash between 2018 and 2019?
Answer: 437-268 = 169