When Sarah left her house this morning, her cell phone was 80% charged and it then started to lose 8% charge for each hour thereaf

Question

When Sarah left her house this morning, her cell phone was 80% charged and it then started to lose 8% charge for each hour thereafter. Write an equation for B, in terms of t, representing the charge remaining in Sarah’s battery, as a percentage, t hours after Sarah left her house.

Daisy · Answer

When Sarah left her house this morning, her cell phone was 80% charged and it then started to lose 8% charge for each hour thereafter. Write an equation for B, in terms of t, representing the charge remaining in Sarah’s battery, as a percentage, t hours after Sarah left her house.

Evelyn

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