We have been given the formula
that relates the quantities of temperature in Fahrenheit (F) and temperature in Celsius (C).
(a). We can write two other related equations as:


(b). Let us substitute C=23 in our given formula to find equivalent temperature in Fahrenheit.

Therefore, the temperature in Fahrenheit will be
.
(c). Let us substitute F=75 and C=25 in our given formula to find which temperature is greater.

Therefore, We can see that
is greater than
.