The activity of a radioactive isotope is measured as 800 Bq800\text{ Bq}800 Bq.
This initial measurement is plotted as a point at (0,800)(0, 800)(0,800) on the graph grid in Figure 1.
The half-life of this radioactive isotope is 12 hours.
Use this information to plot three more points on the grid in Figure 1 to show how the activity of the isotope changes over a period of 36 hours.
