Answer:
Option B is the correct option.
Step-by-step explanation:
If amount of a radioactive isotope decays in half every year and it can be modeled by [tex]f(x) = 346(\frac{1}{2})^{x}[/tex] then we have to tell what does f(1) = 173 represent.
In the formula given [tex](\frac{1}{2})^{x}[/tex] represents the half life of the isotope and 346 is the amount of isotope taken initially.
Therefore f(1) = 173 represents the amount of isotope remained after one year.
Option B is the correct answer.
