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When Joshua left his house in the morning, his cell phone battery was partially charged. Let BB represent the charge remaining in Joshua's battery, as a percentage, tt hours since Joshua left his house. The table below has select values showing the linear relationship between tt and B.B. Determine the charge of the battery when Joshua left his house.

When Joshua left his house in the morning his cell phone battery was partially charged Let BB represent the charge remaining in Joshuas battery as a percentage class=

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Answer:

77 percents

Step-by-step explanation:

find slope 7-21/10-8 = -14/2= -7

find y intercept B=-7t+b  21=-7(8)+b  21=-56+b  77=b

linear equation B=-7t+77

B=-7(0)+77 B=77

final answer 77 percents

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