here is questionThis is the link for the third question: https://www.nytimes.com/2021/02/07/health/coronavirus-variant-us-spread.html

3. Read the article, "Virus Variant First Found in Britain Now Spreading Rapidly in U.S. " from the New York Times on Feb 7. The link is in the Assignment on courseworks. Assume the exponential growth equation is a good approm'mation to model the growth of this variant: W = aert where Vt is the total number of cases of the variant in time period t. (a) How is the time period 1: measured in this model? (b) Use the information in the article about how fast the virus is spreading to estimate its approximate constant growth rate, r