So is doubling, first off, meaning, if the current amount say P, then when it doubles is 2P, or double that, or P + P, so the rate of growth is 100%, since it's doubling.
and is doing it every 9 hour cycle, thus
Answer:
4/1
Step-by-step explanation:
8/8=1, so 32/8=4
I think b is y would 15 and x is 3 making 15=3•5 or 15•3=45
Since 5=15/3
5^x = (15/3)^x = 15^x / 3^3
Choices A and D