James is measuring the temperature h(t) of a plate left sitting in the sun for t hours. Which of the following is the most appropriate domain for h(t)?

A. Positive integers only
B. All real numbers
C. All integers
D. All positive numbers

Question

James is measuring the temperature h(t) of a plate left sitting in the sun for t hours. Which of the following is the most appropriate domain for h(t)?

 	A. 	Positive integers only
  		B. 	All real numbers
  		C. 	All integers
  		D. 	All positive numbers

mathmale · Answer

the key word here is "domain."  Sometimes a function's input is restricted to certain values.  

Look at the four answer choices.   Which do you think is correct, and why?