The second quartile of a data set is 4.2. which statement about the data values is true? a. the data value 2.5 will lie below the second quartile. b. the data value 4.7 will lie below the second quartile. c. one fourth of the values are less than or equal to 4.2, and three fourths are above 4.2. d. one fourth of the values are less than or equal to 4.2, and half of the values are above 4.2. e. one fourth of the values are above 4.2, and half of the values are less than or equal to 4.2.

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example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answer: your correct answer is b. d.

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