What is the volume of a cube if one side is 2x

Find the maximum value of p= 4x + 5y subject to the following constraints :

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected