Final answer:
The temperature changed by approximately 7.2 degrees Celsius.
Step-by-step explanation:
To find the change in temperature on the Celsius scale, we need to convert the temperature from Fahrenheit to Celsius. The formula to convert Fahrenheit to Celsius is: C = (F - 32) / 1.8. Substituting in the initial and final temperatures, we have:
Initial temperature (Fahrenheit): -4.00 °F
Final temperature (Fahrenheit): 45.0 °F
Initial temperature (Celsius): (-4.00 - 32) / 1.8 ≈ -20 °C
Final temperature (Celsius): (45.0 - 32) / 1.8 ≈ 7.2 °C
Therefore, the temperature changed by approximately 7.2 degrees Celsius.