Answer:
<h2>C. 9x³ − 11x² − 7x </h2>
Step-by-step explanation:

Try, pls, this solution (see the attachment).
Step 2
5 divided by 2.5 is NOT 3. B should equal 2. Hope this was helpful and if so please leave a good rating and thanks and maybe even Brainliest answer. Thank you and have a nice day!
Answer: the answer is when the unit rate is a lower cost then the other unit rate.
Step-by-step explanation: