Let x represent the number of times a customer visits a grocery store in a one week period.
Assume this is the probability distribution of x:
x 0 1 2 3
p(X) 0.1 0.4 0.4 0.1

Find the expected value of x, the average number of times a customer visits the store.

What is the product? (x2+3y+7) [yy+1)

This is different from the first one can someone me

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.