Originally Posted by

**needhelp101** I am working on a homework assignment for school. I have come up with an answer, but I would just like to clarify what I have.

Question: Which of the following are subsets of which?

A = {n € P: n is odd}

B = {n € p: n is prime}

C = {4n + 3: n € P}

D = {x € R: x^2 - 8x + 15 = 0}

Answer:

What I did before anything was factor set D, and came up with the answers {3,5}. After factoring out set D, I went ahead and plug in numbers that fit the criteria for each set. After plugging in number fitting the conditions for each set, I came up with the answer that D is a subset of A. D is a subset of B. C is a subset of A. Are these answers correct?