Chad 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. Hours Brightness Level (x) Hours (y) 21 29 7.4 38 51 73 80 90 92 5.7 4.1 4.4 3.9 4.1 1.9 0.1 11+ 10 9 8 7 6 + 3 2 1 10 20 30 -1 40 50 60 70 80 90 100 11 Brightness Level a) Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. b) Interpret the slope in context. Chad should expect -0.0684 hours per brightness level. ○ Chad should expect -0.0684 brightness level per hour. c) What does the equation predict for the number of hours the phone will last at a brightness level of 80? hours d) What is the residual for the point (80,4.1)? hours
Chad 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. Hours Brightness Level (x) Hours (y) 21 29 7.4 38 51 73 80 90 92 5.7 4.1 4.4 3.9 4.1 1.9 0.1 11+ 10 9 8 7 6 + 3 2 1 10 20 30 -1 40 50 60 70 80 90 100 11 Brightness Level a) Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. b) Interpret the slope in context. Chad should expect -0.0684 hours per brightness level. ○ Chad should expect -0.0684 brightness level per hour. c) What does the equation predict for the number of hours the phone will last at a brightness level of 80? hours d) What is the residual for the point (80,4.1)? hours
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.4: Scatter Plots And Line Of Fit
Problem 1GP
Related questions
Question
help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
Transcribed Image Text:Chad 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.
Hours
Brightness Level (x)
Hours (y)
21
29
7.4
38 51 73 80 90 92
5.7 4.1 4.4 3.9 4.1 1.9 0.1
11+
10
9
8
7
6
+
3
2
1
10
20 30
-1
40 50 60 70 80 90 100 11
Brightness Level
a) Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation.
b) Interpret the slope in context.
Chad should expect -0.0684 hours per brightness level.
○ Chad should expect -0.0684 brightness level per hour.
c) What does the equation predict for the number of hours the phone will last at a brightness level of 80?
hours
d) What is the residual for the point (80,4.1)?
hours
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Trigonometry (MindTap Course List)
Trigonometry
ISBN:
9781337278461
Author:
Ron Larson
Publisher:
Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Trigonometry (MindTap Course List)
Trigonometry
ISBN:
9781337278461
Author:
Ron Larson
Publisher:
Cengage Learning
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning