Arectangle has side lengths of 3x +6 inches and 2x -4 inches write an expression to represent the perimeter of the rectangle then find the value of that if the perimeter is 94 inches

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.