(a) "Room temperature" is often taken to be `68°F`. What is this on the Celsius scale? (b) The temperature of the filament in a lightbulb is about 1800°C. What is this on the Fahrenheit scale? Given: `T(°F) = 68°F` `T(°C) = 1800°C` Equations: `T(°C) = 5/9(T(°F)-32)` `T(°F) = 9/5T(°C)+32` a) `T(°C) = 5/9(68-32)` b) `T(°F) = 9/5T(°C)+32` `T(°F) = 9/5(1800)+32`