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Homework Help: Calc 1 please help

  1. Mar 31, 2009 #1
    1. The problem statement, all variables and given/known data
    A container of hot liquid is 180 degrees F. After 4 minutes, the liquid's temperature is 64 degrees F. How much longer will take its temperature to decrease to 32 degrees F? round to three decimal places

    2. Relevant equations

    3. The attempt at a solution
    I have no clue where to start with this problem....
  2. jcsd
  3. Mar 31, 2009 #2


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    Science Advisor

    Since you are given two data points: (0, 180) and (4, 64), I suspect you are intended to try a linear model. Find A and B such that T = At+ B (T is the temperature in degrees, t is the time in minutes) is satisfied by t=0, T= 180 and t= 4, T= 64. Then set T= 32 and solve for t.
  4. Mar 31, 2009 #3
    umm i'm still confused...
  5. Apr 1, 2009 #4
    i didn't write the whole problem sorry...
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