Question 1076018
{{{A(t)=600e^(-0.032t)}}}


For question parts (a), (b), and (c), just do the substitutions and use a calculator.



HALF LIFE

{{{ln(A)=ln(600*e^(-0.032t))}}}

{{{ln(1/2)=ln(1)+(-0.032)t*ln(e)}}}

{{{ln(1/2)=-0.032t}}}

{{{0.032t=ln(2)}}}

{{{highlight(t=ln(2)/0.032)}}}

22 years