Final answer:
Dee finished school at 4:15 AM.
Step-by-step explanation:
To find out what time Dee finished school, we need to add the time she spent at school to the time she arrived. Dee arrived at school at 1:45 AM and didn't go home for 1 hour and 45 minutes. To add the time, we start with the minutes and then carry over any extra hours to the hours section. First, we add 45 minutes to 45 minutes, which equals 90 minutes. This is equivalent to 1 hour and 30 minutes. Then, we add the 1 hour from the hours section to the 1 hour and 30 minutes, which gives us a total of 2 hours and 30 minutes. Adding 2 hours and 30 minutes to 1:45 AM, we get 4:15 AM.