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

7 September, 04:38

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Zane · 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.