Keegan is investigating how long his phone s battery lasts

Last updated: 6/15/2023

Keegan 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 10 9 8 7 6 Hours S 3 2 1 10 20 30 18 19 5 5 6 3 31 37 5 7 7 40 50 60 Brightness Level What is the residual for the point 31 7 7 Round to 4 decimal places hours 41 4 4 61 79 84 3 6 2 2 4 70 80 90 100 H