Mr. Martinez hires a plumber to fix his kitchen sink. The plumber charges a one-time fee of $45 and an additional $15 for parts. He also charges $40 for each hour he works. What would the answer to this be?

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