21. As an investigator looking into a cluster of pediatric cancer cases in a small valley community, you will be working with statistical consultants to gather information from the community. Your job is to fairly sample
the families living in the community.
(a) Choose a sampling method that would allow you to fairly represent the members of this community in
the survey.
(b) Address any bias that may enter into the survey in spite of your best efforts.

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Step-by-step explanation:

the answer is a i belaeve atleast thats what my calculator just gfave me

step-by-step explanation:

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.