Question

Sheila was not feeling well. She tried checking if she has a fever. She used a thermometer and was shocked to find out that she had a temperature of . However, she realized that the thermometer measures in Fahrenheit. She knows that she has a fever if her temperature is about or above. On the back of the thermometer, the conversion of temperature was given to be . 

By using the concept of an inverse function, find out if Sheila has a fever.