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Aidan 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

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Aidan 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. How's 10+ 9 8 7+ 6 5 3 2 1 Brightness Level (x) Hours (y) 22 6.7 23 4.1 24 7 31 5.9 37 6.1 50 3.7 77 2.2 96 1.6 10 20 30 40 50 60 70 80 90 100 11 Brightness Level a) Find the equation for the line of best fit. Keep at least 3 decimals for each parameter in the equation. (You should begin by typing y=)

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