Joes electric made 19 customer calls last week and 24 calls this week. how many calls must be made next week in order to maintain an average of at least 20 calls per week for the three week period?

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.

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)