Between which two consecutive whole numbers does the root of 15 lie

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Y= a(x-3)squared-1 what is the value of a