SOLVED:The amount of radioactive material in an ore sample is given by the function defined by A(t)=100(3.2)^{-0.5 t} where A(t) is the amount present, in grams, of the sample t months after the initial measurement. (a) How much was present at the initial measurement? (Hint: t=0 . ) (b) How much was present 2 months later? (c) How much was present 10 months later? (d) Graph the function.

Campbell University

Oregon State University

Harvey Mudd College