The formula C = 5 (F − 32) can be used to convert Fahrenheit temperatures F to 9 Celsius temperatures C. For what Fahrenheit temperatures is the Celsius temperature lower than 45 degrees C?
The given formula C=5(F-32) should properly read C=(5/9)(F-32), or 9C=5(F-32). Using the corrected formula, F=(9C/5)+32, so for C<45, F<(9*45/5)+32=113 degrees Incidentally, these are the temperatures that yeast can survive. Above 45 degrees C, they might die of heat!
