As part of a survey of college students a researcher is interested is the variable, class standing. She records a '1' if the student is a freshman, a '2' if the students is a sophomore, a '3' if the student is a junior, and a '4' if the student is a senior. The variable, class standing is:. a. both categorical and quantitative
b. quantitative
c. categorical
d. none of the above

c. categorical

Step-by-step explanation:

                     Categories of the record

      1                       2                  3               4

Freshman      Sophomore     Junior        Senior

This is simply a categorical arrangement of students in the college by the researcher who is interested in the variable, class standing. So option C is correct

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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