Question 984308
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The domain is the set of values for which the function is defined.  The stem of the question gives you the time period for which the function is valid, so the domain is the set of numbers of hours since 8 am until 4 pm, 0 through...


This is a linear function and, since the slope is positive, it is increasing.  So the range is going to be the set of values of the function (the Temperature) from the point where the independent variable (hours since 8) is smallest to the point where the independent variable  is largest.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \