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Mateo is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in

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Mateo is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) In co 4.6 3.9 3.4 2.8 Hours 10 20 30 40 50 60 70 80 90 100 141 Brightness Level a) Find the equation for the line of best fit. Keep at least 3 decimals for each parameter in the equation

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