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

Question

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] · Answer 1 · 2021-12-12T18:29:31+03:00

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] · Answer 2 · 2021-12-12T20:32:03+03:00

Aliun [14]4 years ago

7 0

Answer:

the answer is B

Step-by-step explanation: