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I'm guessing when they say "Which solution set ", they are offering a list of choices?

Yes! drawing them right now:)

|dw:1443324314598:dw|

Sorry about the bad drawing.

it's ok

the first one has a Z in it?

Yes!

the big R means "real numbers"
a real number is any decimal number you can think of
eg: 2.7562

negative numbers are also real numbers
eg: -2.87 is a real number

I know I'm wrong. Just looked at my notes.

So its between 2 and 3 then?

well we wouldn't use R because we don't want real numbers
we want integers

we use Z for the set of integers

So number one?

|dw:1443238883932:dw|

|dw:1443238904937:dw|

yeah it's the first one and hopefully you see why based on what I posted above

|dw:1443325104010:dw|

I also have this possible answer.

it states ` less than or equal to -1`
the key part to look out for is the `or equal to`

And only the first one demonstrates that?

the one with
\[\Large \{x|x\in\mathbb{Z} \ \text{ and } x \le -1\}\]
whichever one that is

Thats the first one:)

ok just checking, yeah the first one is the answer