How do i evaluate -3*(7+(-3)^2) divided by 3?

possible answer's,
-2
-1
16
-16

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?