Eric purchased three music cds and a sweatshirt from a band's online store and received a 20% discount. he paid $100 for his purchase. the following week, the same store offered a 40% discount on all its products. eric's friend neil took advantage of the sale and bought four music cds and two sweatshirts for $120.

1. assuming that the actual prices of the music cds and the sweatshirts are unchanged, the price of a music cd is $
answers:
20
25
30
50

and the price of a sweatshirt is $
answers:
20
25
30
50

Someone answer asap for ! 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.

I’m really confused and need your assist me with this question i’ve never been taught

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?