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alekssr [168]
4 years ago
10

William recorded data to determine the relationship between the time usage, x, and the percentage of charge left on his mobile p

hone, y. He graphed the data and drew the line of best fit. The equation of the line of best fit is y = -10x + 100. About how many hours will it take for the phone lose its charge completely?
A.
about 5 hours
B.
about 10 hours
C.
about 20 hours
D.
about 22 hours
E.
about 24 hours
Mathematics
2 answers:
mart [117]4 years ago
8 0
The answer is B. In 10 hours, the phone would completely lose its charge.
Y=-10(10)+100=-100+100=0
Aliun [14]4 years ago
7 0

Answer:

the answer is B

Step-by-step explanation:

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