Question

A radioactive substance loses half its amount every 50 years. Which type of function best models this scenario?(1 point)

exponential decay function

linear function

exponential growth function

quadratic function

Answer 1

Exponential decay function.

Reason: the amount is multiplied by 1/2 every 50 years, so A(t) = A0*(1/2)^(t/50), which is exponential decay.