Jennifer is preparing to run in a marathon. Every morning, she runs 5 miles in 45 minutes. At that rate, approximately how far could she run in 120 minutes?

First, we need to determine Jennifer's running speed in miles per minute.

5 miles divided by 45 minutes = 0.111 miles per minute

Then, we can calculate how far she could run in 120 minutes using her running speed:
0.111 miles per minute x 120 minutes = 13.2 miles

Therefore, Jennifer could run approximately 13.2 miles in 120 minutes.