Test of Essential Academic Skills (TEAS) ATI Mathematics Practice Test

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Which equation best describes the relationship among the shifts Dr. Lewis worked in the three months?

shifts = 20 + 3 + 1/2
shifts = (20)(3)(1/2)
shifts = (20)(1/2)(3)
shifts = 20 + 3 + 2

The correct answer is: shifts = (20)(3)(1/2)

To determine the best equation that describes the relationship among the shifts Dr. Lewis worked, it’s essential to consider the way these values interact with each other. The representation of shifts as a product suggests that the total number of shifts can be seen as the combined result of different factors. In this case, the equation that states shifts = (20)(3)(1/2) accurately captures this relationship, implying that the total shifts are derived from multiplying three individual components. For example, if 20 represents a base number of shifts, 3 could indicate the number of weeks worked, and 1/2 might represent a fraction of shifts worked in certain weeks or certain conditions leading to variations in total shifts. Multiplication is often used when representing combinations of factors that influence a total outcome, whereas addition typically indicates putting together distinct quantities. The other choices lean towards adding quantities which implies direct accumulation, rather than showing the multiplicative relationship implied in the question context. Thus, recognizing shifts as a product of factors (20, 3, and 1/2) best encapsulates the scenario and the interdependency of these values in calculating total shifts worked by Dr. Lewis.