All of the following are examples of quantitative data except (a) the number of siblings that students have (b) the exam scores for the students in a class (c) the amount of sleep normally gotten by the students in a class (d) the cholesterol levels of the students in a class the gender of the students in a class.

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14