Question 1205428
{{{s=ye^(-0.04t)}}}
t is in years.
y, s, in grams.



(A)
how much still after 5 years?


{{{s=50*e^(-0.04*5)}}}----------you can use the computational tool of your choice.


OR


{{{s=50*e^(-0.2)}}}-----------and use the computational tool of your choice.



(B) Big hint
Take natural log of both sides of {{{s=ye^(-0.04t)}}} and solve for t.