The monthly dues for a premium membership at a health club is $15 more than the cost of a standard membership. The premium member is $40. Write and solve an equation to find the cost of a standard membership. Use the variable x.

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