Brent decides to purchase ground beef to make tacos rather than pricier steak because his weekly budget restricts his expenditure on food. Brent is acting as a rational consumer in that he is recognizing that

Ray gives his son, mason, three bowls. these bowls have the same capacity, but each one differs slightly in its shape and size. ray tells his son that one of the bowls can hold more liters of oil than the other two bowls. mason points out that all the bowls, though may appear different in size and shape, can store the same volume of oil. in this case, ray was most likely testing mason's concept of