Let event A = The place is a city.
Let event B = The place is in North America.
Which outcomes are in A or B?
A. {Chicago, Miami, Canada, Mexico}
B. {Chicago, Miami}
C. {Tokyo, Chicago, Miami}
D. {Tokyo, Chicago, Miami, Canada, Mexico}

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

If you could answer these your a life saver

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?