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Mathematics, 05.05.2020 12:29 awesomegrill

The time it takes to charge the battery of a cell phone is directly proportional to the charge of the battery. The equation, y = 0.21x, is used to approximate the time it takes to charge the battery of a cell phone. Approximate how long it will take the battery to charge to 100%.
https://dw6y82u65ww8h. cloudfront. net/organisations/328/3bf698cd-1ea0 -4cb4-a7a2-bdb57706cad2/img_battery _charge. gif

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