Question

If I = {integers} and subset P = {positive integers}, what is P'?
A:{1, 2, 3, ...}
B: {...−3, −2, −1, 0}
C:{2, 4, 6, ...}
D: { }

Answer 1

If someone could show me how to do this, it would be greatly appreciated :)

Answer 2

It's the first one because the positive integers are the "counting numbers" starting with "1" and then "2" and then "3" and so on. That is a subset of all integers, which looks like:

{ ..., -3, -2, -1, 0, 1, 2, 3, ... }

Answer 3

All good now?

Answer 4

Okay :) Thank you soooooo much!!
f f(x) = 2x + 4, find f(3).

10

6

9

4

Answer 5

The way you would do that is to put "3" where the "x" is on the right side, like so:

2(3) + 4 = 6 + 4 = 10

So, it's the first one.

Answer 6

Thank you! :)

Answer 7

You're always welcome!