Let c be the number of calories burned
and let t be the time taken to burn the calories.
At 1 minute, 20 calories are burned
Mathematically, we express that as;
[tex]\begin{gathered} c=\text{ k}\times t \\ \text{Where k is constant of proportionality;} \\ 20=k\times1 \\ k=20 \end{gathered}[/tex]Thus, the function that represents the situation is;
[tex]\begin{gathered} \text{substitute the value of k in the equation above} \\ c=20t \end{gathered}[/tex]ANSWER: The linear function that represents the situation is c=20t