Aperson flips a fair coin until the first head appears. if flips the coin n times, they win 2^n dollars. if x denotes the player’s winnings, show that e[x] = +∞. (a) would you pay $1 million to play this game? (b) would you pay $1 million for each game and only need to settle your debt after you decide to stop playing?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?