#3. Plugging the point (3,0) into any of the equations except the third one gives an invalid answer.
Answer:
= 0.708
Step-by-step explanation:
-3(2r+7)=3
distribute -3
-6r-21=3
add 21 to both sides, this causes the 21 on the left to cancel itself out.
-6r=24
divide each side by -6, this causes the -6 on the left side to cancel itself out.
r=-4
For this case we must simplify the following expression:

We convert the mixed number to an improper fraction:

So, by rewriting we have:


Answer:
