The leaf litter decomposition function of gmelina arboreal at time (t) weeks is given by : y=250e^-t/3. Draw a graph showing the natural decay curve over the first 6 weeks. From the graph, find the nutrient loss after 3-4 weeks(3 weeks and 4 days)

3 answers

geez - this has been done for you twice already.
Give it a rest, willya?
enter your equation here:
www.desmos.com/calculator

(copy and paste that as your URL, the program understands e
and use ^ to get into exponent mode)

You can set the domain and range by clicking on the tools button in the top right. I set my mine at 0 ≤ y ≤ 250, and 0 ≤ x ≤ 6

t = 3+4/7 = 3.57..
so your exponent = -(3 + 4/7)/3 or -1.1904

f(-1.1904) = 250e^-1.1904 = appr 76

If you slide your cursor along the curve, the point will be displayed
try to get x = 3.57 to get 76.055
yup
and I went through all that effort to do it again,
this is what happens when students become impatient.