Question

The model for radioactive decay is y = ye^-kt. A radioactive substance has a half life of 1000 years. If 25 grams are present today, in how many years will 8 grams bepresent? While solving this problem, round the value of k to seven decimal places. Round your answer to two decimal placeskond

Answer 1

Step-by-step explanation:

We are given the function that models the radioactive decay for a radioactive substance, as shown;

`y=y_0e^(-kt)`
`\begin{gathered} y_0=the\text{ amount at the present time }(t_0) \\ k\text{ is a constant} \\ t=time\text{ in years} \end{gathered}`

Where t (time) is 1,000 years;