<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!
Answer:
400 miles per hour
Step-by-step explanation:
2.000 miles : 5 hours =400 miles per hour
have a nice day :)
Work is force times distance. Note that the only work done here is in the direction opposed to gravity, or if you prefer the change in height times the weight...
W=3sin20(8*9.8)
W≈80.44 J