SOLUTION: Suppose that the half-life of a substance is 250 years. If there were initially 100𝑔 of the substance, (a) give an exponential model for the situation, (b) how much will remai

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Suppose that the half-life of a substance is 250 years. If there were initially 100𝑔 of the substance, (a) give an exponential model for the situation, (b) how much will remai      Log On


   

Question 1174968: Suppose that the half-life of a substance is 250 years. If there were initially 100𝑔
of the substance, (a) give an exponential model for the situation, (b) how much
will remain after 500 years?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
x, how many years
y=100%281%2F2%29%5E%28x%2F250%29 y=100(1/2)^(x/250)

500 years is two half-lives, so you are looking for y=100%281%2F2%29%5E2.