Hey Gurp925.
If you have a model y(t) = A*e^(kt) where A = 2000g solve for k where 1400 = 2000*e^(80*k) meaning k = [ln(7/10)]/80 which using R gives:
> log(7/10)/80
[1] -0.004458437
Try using the above hint to solve the others.
Hi there I have a couple questions I could not solve, if some one could help that would be great
1) Find the half-life if 2000g of mathusiasm decays to 1400g in 80 weeks. Round your answer to nearest week.
-- The formula i get is this 12log(0.7)/log(1/2)=K and my answer is wrong.
2) Find the half-life if 1000g of tspadium decays to 700g in 3 months. Round your answer to the nearest week.
3) The half-life of luvinmathism is 8 days. Write the half life equation that shows the percent, P of luvinmathism in math 12 students after t days.
Thanks in advance.
Hey Gurp925.
If you have a model y(t) = A*e^(kt) where A = 2000g solve for k where 1400 = 2000*e^(80*k) meaning k = [ln(7/10)]/80 which using R gives:
> log(7/10)/80
[1] -0.004458437
Try using the above hint to solve the others.