A technician records the battery percentage of a laptop while it is running a high-performance software over 8 hours.
| Time elapsed (hours) | Battery (%) |
|---|---|
| 0 | 100 |
| 2 | 80 |
| 4 | 60 |
| 6 | 40 |
| 8 | 20 |
A line graph showing the relationship between time elapsed (hours) on the x-axis and battery (%) on the y-axis. The x-axis ranges from 0 to 12 with major grid lines every 2 units. The y-axis ranges from 0 to 100 with major grid lines every 20 units and minor grid lines every 5 units. A straight line starts at (0,100)(0, 100)(0,100) and ends at (8,20)(8, 20)(8,20).
What was the battery percentage when the technician started recording?
How many more hours can the laptop run before the battery is empty?
What assumption have you made to calculate your answer to (b)?
