QUESTION 1 A sample of radioactive actinium-288 has an initial activity of 363 disintegrations per minute and its activity is measured in a laboratory every six hours. The table below shows the recorded data. a) b) Time (hours) (t) 0 6 12 18 24 Disintegrations per minute (min¹¹) (A) 363 184 93.2 47.3 24.0 350 In A Complete the column labeled In A to 2 decimal places in the table above. Plot a graph of A vs t using the values in the table above. (5) (6)
