Acertain isotope decays so that the amount a remaining after t years is given by: a=a0 x e^-0.03t, where a0 is the original amount of the isotope. to the nearest year, the half-life of the isotope (the amount of the time it takes to decay to half the original amount) is years

Step-by-step explanation:

We have an exponential decay function:

This function decreases as the years pass. That is, if A is the quantity for a time t and is the original quantity at time t = 0 then:

We want to know for what value of t the value of A decreases by half of  . That is, we want to know when

Then we do:

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

c. 4 and 1/2 pounds is the answer! : )