What is the midpoint of a line segment joining two points (5,-,12)

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Triangle xyz has vertices x(1,3), y(0,0)

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old