A cell phone battery charges at a rate of 16% every thirty minutes. When initially plugged into the charger, a cell phone has 10% battery.

1. Write an equation relating the amount of time, measured in hours, it takes to charge a cell phone as a function of the battery charge.

2. Use complete sentences to describe the rate in which the battery charges in terms of the time that it is charging

Question

Cannoli

21 January, 21:55

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Answers (1)

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Brenna George · Answer 1

16% per 30 min = 32% per hr

(100-10) / 32 = how many hrs does it take to fully charge the battery

The phone will be fully charged in 2.8 hours.