Math

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Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 11 hours of burning, a candle has a height of 18.6 centimeters. After 27 hours of burning, its height is 12.2 centimeters. What is the height of the candle after 15 hours?

  • Math -

    Calculate how much height it loses per hour. Call it m.

    m = (18.6 - 12.2)/16 = ___ cm/h

    Then solve
    (candle height) y = 12.2
    = 18.6 - m(t - 11)
    using t = 15

    It's called interpolation.

  • Math -

    thanks for the help

  • Math -

    Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 10 hours of burning, a candle has a height of 24 centimeters. After 27 hours of burning, its height is 20.6 centimeters. What is the height of the candle after 21 hours?

  • Math -

    i don't know the answer at all tall my now

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