Question

The temperature in degrees Celsius can be expressed by the function C(f)=59(f−32)C(f)=59(f−32) where f is the temperature in degrees Fahrenheit. Find the temperature in degrees Celsius (to the nearest degree) if it is 55 °f.

Answer 1

$\dfrac{5}{9}\cdot (55-32)=\dfrac{5}{9}\cdot 23=\dfrac{115}{9}\approx 13^\circ C$