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The number of guests in a hostel changes throughout the week. The number is highest over the weekend and lowest on Tuesdays through Thursdays. Which of the following graphs represents the number of empty rooms they have on an average week?
Density
A characteristic indicating the amount of mass contained in a given volume of a material.
Volume
The quantity of three-dimensional space taken up by an object or material, expressed in cubic units.
Substance
A form of matter with a specific chemical composition and distinct properties, distinct from mixtures.
Chemical Sample
A small part or quantity of a chemical substance taken to show the quality or nature of the whole.
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