I know this has been asked a lot of times but can someone please show the steps of how to answer this? You'll get a full 25 points if you help:

Jill buys 10 shares of stock in Costco Corporation at $150 per share on January 30, a membership retailer. During the year, Costco had a dividend of $1.80 per share at the end of June and the stock rose to $164.00 a share. If Jill sold her stock on July 31, what would be her return?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

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

50 plz, given the system of equations, match the following items. x + 3 y = 5 x - 3 y = -1 a) x-determinant b) y-determinant c) system determinant match the following to the pictures below.