Im probably wrong but someone please check my answer??

3. A box contains 5 black shirts, 9 blue shirts, 7 black pants, and 8 blue pants. Determine the probability of randomly selecting a black piece of clothing or a shirt. Use P (A or B) = P (A and B) to explain your answer.

My
P (A or A) = P(A) + P(B)

P(A) = 7 / 29

P(B) = 9 / 29

P (A or B) = 16 / 29

<3 please lmk

Find the solution of this system of equation -7x+y=-20 9x-3y=36

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.)

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay