Answer:
Step-by-step explanation:
22/7x4^2=50.28
3x3=9
50.28-9=41.28
we have

the solution is the interval -------> (3,∞)
therefore
the answer in the attached figure
Answer:
(7000-4000) will make 4000x100 =
(7000:4000-1)x100 =
175-100 = 75
the percentage increase from 4000 to 7000 by 75%