What object is the same feet as a real baseball bat

Through non-collinear points there is exactly one plane.

Ahousekeeper mixed 5 gallons of blue paint with every 9 gallon of yellow paint in order to make a green paint which ratio of gallon of blue paint to gallon of yellow paint will make the same shade of green paint

Consider the function below. which of the following functions could be the inverse of function f? pic below