I only know #1 which is 0.85
Add $20 and $60 and your answer which is $80 dividdd that by 1.
Y=20x -1500, y equals the prophet, x is the number of books, 20 is the money made after taking out the cost of production, 1500 is a cost that only occurs once.
<em>The answer is:</em>

<h2>
Explanation:</h2>
The additive identity property states that if you add any real number to zero or add zero to any real number, you will get the same real number back. In other words:

Here we have that:

So by the mentioned property:

In other words:

<h2>Learn more:</h2>
Distributive property: brainly.com/question/12256474
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Answer:
I say it is B because the 3 hours line up with 18 miles. let me know if I'm right or wrong