My last question But what does it mean? Please help!

If a boat travels 3 miles in 1.5 hours how far will it travel in 2 hours?

What makes a trapezoid an isosceles trapezoid?

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