Round off 547,237 to the nearest hundred thousand

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?