Answer:
12%
Step-by-step explanation:
Answer:

Step-by-step explanation:
We must develop three equations in three unknowns.
I will use these three:



Answer:
5
Step-by-step explanation:
There are 9 friends with 4 or 5 pets so, you subtract 9-4 because there are 4 friends with 2 or 3 = 5 because the question is asking how many more.
So, the negative would be divided out to make it 3, then square both sides to get rid of the square root and get 9, then subtract 15 and you get -6. <span />