Which expression represents the phrase "twice the sum of a number and three"?

2n + 3

2+(2n+3)

2(2n−3)

2(n+3)

Which of the following points is collinear with (-2,1) and (0,3)

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

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.