Which of the following solutions are written in set notation? Select ALL that apply. (2 points)

Question

Responses

{x=4}
{x=4}

(3)
(3)

{-15}
{-15}

25
25

{7}

Answer 1

Set notation is typically used to represent a collection of distinct objects or elements, often within curly braces. Based on your options, the following solutions are written in set notation:

1. {x=4}
2. {x=4} (duplicate)
3. {-15}
4. {7}

The following options are NOT in set notation:

• (3) - this indicates a single value but is not in curly braces.
• 25 - this is simply a number, not in set notation.

So the valid answers are:

• {x=4}
• {-15}
• {7}