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When Marco swim, the number of calories burned after time x, In minutes, is given by the equation y = 330 + 8.2xhow long will it take Marco to burn 800 calories? 1. 62 minutes 2. 57 minutes 3. 45 minutes 4. 51 minutes

Respuesta :

Set y=800 and solve for x to find the time it will take for Marco to burn 800 calories:

[tex]\begin{gathered} y=330+8.2x \\ \Rightarrow800=330+8.2x \\ \Rightarrow8.2x=800-330 \\ \Rightarrow8.2x=470 \\ \Rightarrow x=\frac{470}{8.2} \\ \therefore x=57.31707317\ldots \end{gathered}[/tex]

To the neares minute, it will take 57 minutes to burn 800 calories.

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