Part 1Sometimes questions that involve graphs will ask you to consider the effect of a changing factor or factors. Problem statement: right arrow→ The line labeled D1 in the graph to the right shows the number of cups of lemonade that Caroline and Emily can sell at their lemonade stand at various prices. Caroline and Emily have noticed that they sell more lemonade when it's hotter. Click anywhere on the graph to open a window with a control labeled Temperature. If you use the slider to change the temperature, the line will shift. Change the temperature from 80 degrees to 100100 degrees. Question: right arrow→ At a price of $0.50, how many more or fewer cups of lemonade do Caroline and Emily sell when the temperature is 100100 degrees than when the temperature is 80 degrees?(Note: indicate the change in cups of lemonade sold: fewer will be a negative number and more will be a positive number)Part 2
A.10 1010 B. -2 C. 15 D. 0

Question

Part 1Sometimes questions that involve graphs will ask you to consider the effect of a changing factor or factors. Problem​ statement: right arrow→ The line labeled D1 in the graph to the right shows the number of cups of lemonade that Caroline and Emily can sell at their lemonade stand at various prices. Caroline and Emily have noticed that they sell more lemonade when​ it's hotter. Click anywhere on the graph to open a window with a control labeled Temperature. If you use the slider to change the​ temperature, the line will shift. Change the temperature from 80 degrees to 100100 degrees. ​Question: right arrow→ At a price of​ $0.50, how many more or fewer cups of lemonade do Caroline and Emily sell when the temperature is 100100 degrees than when the temperature is 80​ degrees?​(Note: indicate the change in cups of lemonade​ sold: fewer will be a negative number and more will be a positive​ number)Part 2
A.10 1010 B. ​-2 C. 15 D. 0

BlackTom AI · Accepted Answer

First, let's restate the problem to focus on what is being asked: at a price of $0.50, how does the change in temperature from 80 to 100 degrees affect the number of cups sold, given that the temperature slider shifts the demand line D1?
Option A. 10: This choice means that when the temperature increases by 20 degrees, the quantity sold at $0.50 rises by 10 cups. Since hotter weather tends to boost demand for lemonade, a positive change is expected, and 10 cups is consistent with a notable but not extreme shift along the same price line.
Option B. -2: A negative change would imply that higher temperature reduces sales at $0.50, which contradicts the stated observation that hotter weather increases demand. This option misinterprets the effect of temperature on the demand line.
Option C. 15: A larger increase of 15 cups suggests a stronger shift than what is indicated by the graph or the problem’s given answer. While plausible in some scenarios, it would require a bigger sensitivity to temperature than what the provided data imply.
Option D. 0: No change at all would mean temperature does not affect sales at $0.50, which directly conflicts with the problem's note that temperature influences the number of cups sold. It ignores the described shift of the demand line due to temperature.

In summary, the correct interpretation is that increasing temperature from 80 to 100 degrees shifts the demand line in a way that increases quantity demanded at the $0.50 price by 10 cups, aligning with Option A. The other options either reverse the effect, exaggerate it beyond what the graph shows, or deny the temperature-driven shift altogether.

Test:Sample MyLab Economics Test

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