What number :
Decreased by 0% is 800 ?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

This is different from the first one can someone me

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.