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%.
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c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.

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step-by-step explanation:

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1