Answer:
Step-by-step explanation:

Answer:
2.5
Step-by-step explanation:
Answer:
Step-by-step explanation:




Hope it helps!
Your answer is D 18. The exact answer is 18.288.
Multiply out as indicated: <span>9(r - s) + 5(2r - 2s) = 9r - 9s + 10r - 10s. Next, combine like terms, obtaining 19r -19s (answer)</span>