Answer:
Associative Property
Step-by-step explanation:
The associative property lets us change the grouping, or move grouping symbols (parentheses).
<h2>
Hello!</h2>
The answer is:
The correct option is:
A) $74.55
<h2>Why?</h2>
To calculate how much does Sonya pay for the four pairs altogether, we need to calculate the original price after the 50% discount and the taxes.
Calculating we have:

We have that before the tax, the price of the shoes was $17.5, then, calculating the price after the taxes, we have:

So, we have that the price after discount and the taxes is $18.637 per each pair of shoes.
Hence, the price for the four pairs of shoes will be:

Have a nice day!
Neither beliefs or opinions. Science is open to all opinions and beliefs and can use them to make sense. You could use it to connect with your original beliefs.
There are 150 teachers because 20 * 150 is 3000.