1. When calculating percent increase or decrease the whole should always be considered the (1) original amount
(2) final amount
(3) difference between the final and original amounts
(4) sum of the original and final amounts
PLEASE HELP PLEASE

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Afriend of mine is giving a dinner party. his current wine supply includes 10 bottles of zinfandel, 8 of merlot, and 11 of cabernet (he only drinks red wine), all from different wineries. (a) if he wants to serve 3 bottles of zinfandel and serving order is important, how many ways are there to do this? ways (b) if 6 bottles of wine are to be randomly selected from the 29 for serving, how many ways are there to do this? ways (c) if 6 bottles are randomly selected, how many ways are there to obtain two bottles of each variety? ways (d) if 6 bottles are randomly selected, what is the probability that this results in two bottles of each variety being chosen? (round your answer to three decimal places.) (e) if 6 bottles are randomly selected, what is the probability that all of them are the same variety? (round your answer to three decimal places.)