To change a Celsius temperature to Fahrenheit use the formul

To change a Celsius temperature to Fahrenheit, use the formula F = 9/5 c + 32. You are concerned only with temperatures from freezing to boiling, What is the practical domain of the function? What is the practical range of the function?

Solution

Freezing occurs at 0 degrees celcius.

Boiling occurs at 100 degrees celcius.

Hence, Practical Domain of function is [0,100]

b)

Practical Range of the function is Range of F.

At C=0,

F= 32

and at C=100,

F= (9/5)100 +32

= 180 + 32 = 212

Range of function is [32,212]