SOLUTION: If the temperature at 9:00 Pm was 12 degrees Fahrenheit and 6 hours the temperature dropped to 6 degrees Fahrenheit below zero, what was the rate of change in temperature per hour?

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Question 1144076: If the temperature at 9:00 Pm was 12 degrees Fahrenheit and 6 hours the temperature dropped to 6 degrees Fahrenheit below zero, what was the rate of change in temperature per hour?
A)2
B)3
C)4
D)5
Found 3 solutions by Alan3354, ikleyn, greenestamps:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
If the temperature at 9:00 Pm was 12 degrees Fahrenheit and 6 hours the temperature dropped to 6 degrees Fahrenheit below zero, what was the rate of change in temperature per hour?
---------------
To find degs/hr, divide the change in degrees by the hours.
Note that this gives the average over the time span, and not for each hour.
Answer by ikleyn(52800)   (Show Source): You can put this solution on YOUR website!
.
If the temperature at 9:00 Pm was 12 degrees Fahrenheit and 6 hours the temperature
dropped to 6 degrees Fahrenheit below zero, what was the rate of change in temperature per hour?
A)2
B)3
C)4
D)5
~~~~~~~~~~~~~~~


            Pay attention on how I edited your post to make sense. 



. . . Then the rate of change was   =  = -3 degrees of Fahrenheit per hour,


which  // (!) ATTENTION (!) //  is not in your option list.



To get the answer, you should subtract the present value of the temperature from its future value and to divide 

this difference by the duration of the time period.


Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!


The answer choices make no sense for the problem as stated.

The temperature is dropping; the rate of change has to be negative. All the answer choices are positive.
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