At what temperature is the temperature in degrees Fahrenheit equal to the temperature in degrees Celsius?

• A. 0º
• B. 25º
• C. -40º
• D. -29º

Answer: (C)

Verified step by step guidance

1. Start by understanding the relationship between degrees Fahrenheit (°F) and degrees Celsius (°C). The formula to convert Celsius to Fahrenheit is: $F=\frac{9}{5}C+32$.
2. To find the temperature where °F equals °C, set the two temperatures equal to each other: $F=C$.
3. Substitute the expression for °F from the conversion formula into the equation: $\frac{9}{5}C+32=C$.
4. Solve the equation for C. Start by subtracting C from both sides to isolate terms involving C: $\frac{9}{5}C-C=-32$.
5. Combine like terms and solve for C. This will give you the temperature at which °F equals °C.