Question

Fill in the blanks!
The population decreased by 2.
Use algebra tiles to represent the expression.
We're going to use a variable to represent the unknown quantity of the population.
Use the variable x.
Drag a positive x tile to represent the _.
Since I'm decreasing by 2, I am subtracting 2, so I have x _ _.

Answer 1

Sure! Here's how you can fill in the blanks:

The population decreased by 2.
Use algebra tiles to represent the expression.
We're going to use a variable to represent the unknown quantity of the population.
Use the variable x.
Drag a positive x tile to represent the **population**.
Since I'm decreasing by 2, I am subtracting 2, so I have x **- 2**.

So the full statement would read: "Drag a positive x tile to represent the population. Since I'm decreasing by 2, I have x - 2."