Systems of equations with different slopes and different y-intercepts have one solution. Never
Sometimes
Always

What situation is an example of an observational study

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.

What is the value of f(x) = 2.2 for f(-2)?