Which of the following scenarios could be represented by the expression 12x + 7y?
A. The total weight of a box containing x 7-ounce packages of
almonds and y 12-ounce packages of peanuts.
B. The number of kids in a school class if there are 12 girls and 7
boys.
C. The total number of marbles in a jar if there are 7 green and 12
red.
D. The cost for x adults and y children to go to the movies if adult
tickets are $12 and child tickets are $7.

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.