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Mathematics, 19.11.2020 04:30 224509

Henry is filling up his fish tank with water at a constant rate. At 2 minutes the water level is 16 cm. At 8 minutes the water level is at 34 cm.
O mins
what was the water level at 0 min?

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Answers: 2
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Answer from: Quest

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

\frac{s(x+h)-s(x)}{h} = \frac{-10h}{h} = -10

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