3. The temperature increased from 82 degrees Fahrenheit in 4 hours. In the 4 hours before, it turned 82
   degrees fahrenheit, the temperature increased from 73 degrees fahrenheit to 82 degrees fahrenheit. What
   was the change in temperature per hour; written as a mixed number?

In the first 4 hours, the temperature rose from 73°F to 82°F, a total change of 9°F over those 4 hours. This means the change per hour was 9°F divided by 4, which equals 2¼°F per hour. In the following 4 hours, if the temperature went up to 82°F from an unspecified lower temperature, we can find the change in the same manner but need the initial starting temperature for that period!

The key to these types of problems is really breaking down each segment of time and calculation step by step. Make sure you keep track of where each temperature begins and ends to avoid any confusion. It’s easy to get tangled in numbers, but staying organized will help you find those rates like a pro!