Select all representations for the domain of a function given by the number of minutes spent practicing your instrument for the last two hours.
There are two correct answers, and both must be chosen to receive credit for this question
1) [0, 120] - This represents the range of possible values for the number of minutes spent practicing the instrument, within the last two hours. The lower bound is 0, indicating no practice time, and the upper bound is 120, indicating two hours of practice (120 minutes).
2) R - This represents the set of all real numbers. Although it may not be practical or realistic for someone to practice their instrument for negative minutes or an infinite amount of time, theoretically, any real number represents a possible value for the number of minutes spent practicing. Thus, the domain can be represented using the set of all real numbers, denoted as R.