This histogram shows the numbers of shoppers in various age groups at a clothing store.

how many shoppers are at least 30 years old?

a.5

b.7

c.13

d.17

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.