It would be 15.4 -8.1 , hope this helps
-8
On the number line if you are at positive 8 and add -8 you will lose 8 and get zero! Hope this helps!
The answer would be the first one, 2s+6.
Answer:
r = 9
Step-by-step explanation:
cross multiply
9 * r = 81
9r = 81
divide both sides by 9
r= 81/9
r = 9