I need help in the last section. Also check for any mistake above

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

What is the frequency of the sinusoidal graph?

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.