He scientist begins with 100 mg of a radioactive substance that the case exponentially. How many milligrams will remain after 54 hours? Use the exponential decay equation D(t)=100e-0.02t

Amayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. she asks only the people in her office. her co-workers are an example of a census population convenience sample simple random sample