Have a question for math about 30 factor tree

Let x = a + bi and y = c + di and z = f + gi. which statements are true?

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be

Astocks price gained 3% in april and 5% in may and then lost 4% in june and 1% in july during which month did the stocks price change the most