Let:
100%---------------->24h
30%------------------>xh
Using cross multiplication:
For this we will use equation:
H = starting height + rate_of_growth*periods
We can mark H with index w to represent how many weeks have passed.
Because all of this we can write:
Hw = 200 + 0.5*w
To calculate height after some number of weeks all you need to do is to exchange w with number of weeks.
Answer:
the correct answer is (b).........
144 divided by 16, 9 pounds