Deep in his mountain-side meteorology lab, the mad scientist Kelvin has mastered weather prediction.

Recently, Kelvin began publishing his weather forecasts on his website. However there’s a problem: All of his forecasts describe the temperature in Kelvin.

With our knowledge of JavaScript, let’s convert Kelvin to Celsius, then to Fahrenheit.

For example, 283 K converts to 10 °C which converts to 50 °F.

1.

The forecast today is 293 Kelvin. To start, create a variable named kelvin, and set it equal to 293.

The value saved to kelvin will stay constant. Choose the variable type with this in mind.

2.

Write a comment above that explains this line of code.

3.

Celsius is similar to Kelvin — the only difference is that Celsius is 273 degrees less than Kelvin.

Let’s convert Kelvin to Celsius by subtracting 273 from the kelvin variable. Store the result in another variable, named celsius.

4.

Write a comment above that explains this line of code.