Answer:

Step-by-step explanation:
Ok first multiply the first two monomials:

Then multiply THAT with the OTHER monomial:

This should be the answer. Let me know if it's wrong.
Answer:
it is rational
Step-by-step explanation:
Answer:
$8
Step-by-step explanation:
You divide 7 by 7 and 56 by 7, 56 divided by 7 is 8, therefore the unit rate is $8 per book.
Answer:
D
Step-by-step explanation:
4(2000)=8000; 4(300)=1200; 4(20)=80; 4(6)=24