The unit rate of 15 degrees in 2 hours.
It says here that in 2 hours, there are 15 degrees.
So we need to find the unit rate of this given situation per hours.
There are 2 hours
so you'll divide 2 by 15 to get the unit rate of the given situation
15 divided by two is 7.5
So the unit rate would be 7.5 degrees per hour.