Answer:
Hope the picture will help you.............
Nope, <span>5r + r3s is not a monomial.
Monomials cannot include addition or subtraction, and since this uses addition, it is not a monomial.
</span>
I hope this helps and have a great day! If you need anymore help you can link me to another question and I will try to solve it!
Answer:
70.5 it is the answer. I hope I am helpful please mark brainlist