Answer:
The change was 18 ° F
Step-by-step explanation:
We know that:
At noon, the temperature in Tempest, California was 78°F
At midnight the temperature is: 60°F.
To find the temperature drop, subtract the temperature of noon with the temperature at midnight.

<h3>The change was 18 ° F</h3>
What you would have to do is take the 18 and double it because 50% doubled is 100% so when you double 18 it is 36
Inserting all the given information into the identity, we have

The base would be equal to 18