Hi Nolan. Let's break this problem down into steps.
Step 1: find the conversion factor that allows us to go from hours to minutes
The conversion factor we can use is 1 hour= 60 minutes.
Step 2: Use this conversion factor to find out how long Theresa's class is
5 hours x 60 minutes/1 hour
We have to cancel out the hour units so we can have only the unit we desire (minutes) in the numerator. Doing so yields:
5 hours x 60 minutes/ 1 hour = 300 minutes
If you have any questions or want to schedule a lesson with me, please do not hesitate to send me a message through Wyzant.