Answer :
Final answer:
To convert Celsius to Fahrenheit, multiply the Celsius temperature by 1.8 and add 32.
Explanation:
To convert Celsius to Fahrenheit, you multiply the Celsius temperature by 1.8 and then add 32. So, to determine the Celsius temperature if it is 89 degrees Fahrenheit outside, you need to subtract 32 from 89 and then divide the result by 1.8. This gives you the Celsius temperature of approximately 31.67 degrees.