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5. A student wakes up at 7 am for school and unplugs their phone. By 10 am, they notice that the battery is at 79%. By 3 pm, the battery is down to 44%. a) How much does the battery decrease each hour? b) Is this considered a linear relation? c) Set up an equation that represents the battery percentage (B) over time (t)-number of hours since it was unplugged.

5. A student wakes up at 7 am for school and unplugs their phone. By 10 am, they notice that the battery is at 79%. By 3 pm, the battery is down to 44%. a) How much does the battery decrease each hour? b) Is this considered a linear relation? c) Set up an equation that represents the battery percentage (B) over time (t)-number of hours since it was unplugged.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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5. A student wakes up at 7 am for school and unplugs their phone. By 10 am, they notice that the battery is at 79%. By 3 pm, the battery is down to 44%. a) How much does the battery decrease each hour? b) Is this considered a linear relation? c) Set up an equation that represents the battery percentage (B) over time (t) -number of hours since it was unplugged. d) Use your equation to predict when the phone will die.
Transcribed Image Text:5. A student wakes up at 7 am for school and unplugs their phone. By 10 am, they notice that the battery is at 79%. By 3 pm, the battery is down to 44%. a) How much does the battery decrease each hour? b) Is this considered a linear relation? c) Set up an equation that represents the battery percentage (B) over time (t) -number of hours since it was unplugged. d) Use your equation to predict when the phone will die.
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