Which of the following is an irrational number? the product of 16 and 9

the product of 1/3 and
3
the sum of pie and pie
the sum of 3 and 0.3

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