Answer:
approximately 27 grams
Work Shown:
Half life formula
y = A*(0.5)^(x/H)
where,
A = starting amount = 30 grams
H = half life period = 90 years
x = number of years that pass by = 12
y = amount left over after x years
Let's plug the values for x, A and H into the formula to find y
y = A*(0.5)^(x/H)
y = 30*(0.5)^(12/90)
y = 27.3516746567466
y = 27 .... rounding to the nearest whole number
I got 5.5 but I could for sure be wrong :/
Answer:
The answer is A I'm not 100 percent sure
It is leaner because the progress of the tree growth is constant. Every year it increases 2 feet staring at 20 feet
Hope it helps see below
Answer: 1800e^(.95*x)
