Radioactive decay: Radium 223 is a radioactive substance that itself is a product of the radioactive decay of thorium 227. For one experiment, the amount A of radium 223 present, as a function of the...

Radioactive decay: Radium 223 is a radioactive substance that itself is a product of the radioactive decay of thorium 227. For one experiment, the amount A of radium 223 present, as a function of the time t since the experiment began, is given by the formula A = 3(e−0.038t − e−0.059t ), where A is measured in grams and t in days.

a. Make a graph of A versus t covering the first 60 days of the experiment.

b. What was the largest amount of radium 223 present over the first 60 days of the experiment?

c. What was the largest amount of radium 223 present over the first 10 days of the experiment?

d. What was the smallest amount of radium 223 present over the first 60 days of the experiment?