The rapid growth of the Coronavirus in Spring, 2020 (now referred to as Covid-19) made us realize how quickly a deadly pandemic can infect large numbers of people. The world first became aware of the outbreak in January, 2020 in Wuhan, China. Lets assume that initially 100 people were known to have become infected. In the early days of the pandemic, the number of people infected doubled every three days. Assuming that the rate of infection continued to double every three days, how many days will it take until 1,000,000 individuals have been infected (rounded to the nearest whole number)?

• 13 days

• 40 days

• 30 days

• 20 days