Which equation has infinitely many solutions? a) 8x + 3 2 = 2x + 4 b) 15x + 5 3 = 5x + 2 c) 8x + 5 2 = 8x + 6 d) 9x + 6 3 = 3x + 2

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