Nell writes the expression

Question

(3.6x+6)−4. She rewrites the expression using the associative property. Which expression could Nell have written using the associative property? 7.PAFR.3.2
5.6x
9.6x−4
3.6x+(6−4)
3.6(x+6)−4

Answer 1

The associative property allows you to regroup terms in an expression, particularly when dealing with addition and multiplication.

In Nell's original expression \((3.6x + 6) - 4\), she can use the associative property to change the grouping of the terms.

Among the options provided, the expression \(3.6x + (6 - 4)\) fits the use of the associative property because it regroup the constants \(6\) and \(-4\).

So, the correct expression that Nell could have written using the associative property is:

3.6x + (6 - 4)

However, since that option is not explicitly listed, we can focus on the provided options to see which one uses associative grouping. The closest option would be:

3.6x + (6 - 4)

But as per the given choices, the suitable answer might not be listed. Just ensure you check the options available to you again, as the math concept is sound.