Exercise $1$: To convert a temperature from degrees Fahrenheit to degrees Kelvin, we subtract $32$ from the Fahrenheit temperature, multiply that value by five$-$ninths, then add $273\mathrm{.}15.$ For example, $70$ degrees Fahrenheit is approximately $294\mathrm{.}26$ degrees Kelvin.

In PyTutor's editor window, type two assignment statements:

The first statement creates a new variable named degrees$\_f$ and assigns it $($binds it to$)$ the integer $70.$

The second statement converts the temperature referred to by degrees$\_$f to the equivalent temperature in degrees Kelvin, using the formula presented above. This temperature should be assigned to a new variable named degrees$\_$k$.$

Click the Visualize Execution button. Execute the code, one statement at a time, by clicking the Forward$>$ button. Observe the memory model as the code is executed, step$-$by$-$step. Verify that your code converts $70$ degrees Fahrenheit to $($approximately$)294\mathrm{.}26$ degrees Kelvin. If necessary, correct your code and retest it$.$

Record your answers to these questions in lab$3.$txt:

$($a$)$ Write the Python statement that caused the variable degrees$\_$f to appear in the memory model.

$($b$)$ What is the name of the frame containing degrees$\_$f$?$

$($c$)$ What does the arrow that points from degrees $f$ to $70$ renresent?