Which model best represents the expression 2(-4)?

The expression 2(-4) can be simplified as: 2 * (-4) = -8.

Therefore, the model that best represents this expression is a number line with 8 units towards the left of the origin (-8).

To find the model that best represents the expression 2(-4), we need to simplify the expression.

Step 1: Multiply 2 by -4, which gives us -8.

So, the model that best represents the expression 2(-4) is -8.