How do you write each real-world example as a rate using labels and then the unit rate: Mrs. Thomas charges $60 for 120 minutes of tutoring?
See the explanation
Let time be
Let cost be
Basing unity to be time
The units of measurement for time in the question is given as minutes.
To make unit time we need to convert the 120 minutes into 1 minute
So we have:
For unit time to be 1 minute the charge is $0.50
So to change this to that form we need 60 minute
But 60 minutes is the same as 1 hour giving: