Nick made a histogram showing the number of sport caps each of his friends own.

how many more friends have 2 or 3 sport caps than have 6 or 7 sport caps?

a.
7

b.
11

c.
12

d.
13

Is the orthocenter of a triangle on the inside ?

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

How many grams the dog will eat in 3 days?