#### Answer

Option (d)

#### Work Step by Step

RECALL:
In a polynomial, the letters are called variables.
Thus, $x$ and $y$ are called variables.
Therefore, the answer is Option (d).

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

Option (d)

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.