eep at least 4 decimals for each parameter in the equation. b) Interpret the slope in context. Evan should expect -0.0604 hours per brightness level. Evan should expect -0.0604 brightness level per hour. c) What does the equation predict for the number of hours the phone will last at a brightness level of 36?
eep at least 4 decimals for each parameter in the equation. b) Interpret the slope in context. Evan should expect -0.0604 hours per brightness level. Evan should expect -0.0604 brightness level per hour. c) What does the equation predict for the number of hours the phone will last at a brightness level of 36?
Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
Problem 3TI: Table 6 shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to...
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Question
Evan 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) | 17 | 26 | 30 | 35 | 36 | 37 | 45 | 94 |
|---|---|---|---|---|---|---|---|---|
| Hours (y) | 6.7 | 5.9 | 5.8 | 4.5 | 6.8 | 6.1 | 3.8 | 2.1 |
10203040506070809010011012345678910-1Brightness LevelHours
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.
- Evan should expect -0.0604 hours per brightness level.
- Evan should expect -0.0604 brightness level per hour.
c) What does the equation predict for the number of hours the phone will last at a brightness level of 36?
hours
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