-2(x-10) just need to know what that equallys

What is the base of 1/9 to the power of 2

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.

In an improper fraction, is the numerator equal to, less than, or greater than the denominator