The answer is A and B. I showed my work below. I hope it makes sense. Let me know if you have any questions.
Well since you're using 3/8 and you need to make 4 batches, you need to multiply 3/8 with 4 it would equal 12/8 or 1 4/8 (I could be wrong but this is my answer hopefully this helps) :) <span />
$40/12 = unit rate simplify = 10/3
$10/3 per book
18 * 10/3 = $60 for 18 copies

<h2>QUESTION</h2>

<h2>FIRST YOU HAVE TO DISTRIBUTE:</h2>

<h2>SOLVING FOR OUR ANSWER</h2>

<h2 /><h2>NEW EQUATION/THE ANSWER YOU WERE LOOKING FOR </h2>

<h2>GOOD LUCK ON YOUR ASSIGNMENT AND ENJOY YOUR DAY!</h2>
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<h2>SIDE NOTE: THE DISTRIBUTIVE FORMULA IS</h2>

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Answer:
10/8 = 5/4x
y=5/4x
hope that answers your question
Step-by-step explanation: