Answer:
Step-by-step explanation:
Answer:
9)A. $280
B. $1120
10. 20%
11)A. $560
B.8560
12. $5950
Step-by-step explanation:
1400/5=280
Answer:

Step-by-step explanation:
Let's solve 
Divide both sides by 100:

Take the square root of both sides:
(I did not keep the negative value because it doesn't matter since we are only considering even powers of
.)
So now let's plug it into:


