The graph (A) models the trend the manager notices.
What is graph?
"It is the set of points which satisfy given function or equation or model."
What is average rate?
"It describes how much one variable, on average, changes when compared to another variable."
For given question,
The manager notices that the time period starts with a sharp but steady increase, is followed by a period during which the restaurant is constantly serving the maximum number of customers per minute, and then has a slow but steady decline.
The x-axis represents the the average rate of customers served and Y-axis represents the time.
Consider graph (A)
The graph starts with a sharp but steady increase, is followed by a constant line with maximum value (the maximum number of customers per minute), and then there is a slow but steady decline.
Consider graph (B)
The graph starts with a slow but steady increase, is followed by a constant line with maximum value (the maximum number of customers per minute), and then there is a sharp but steady decline.
Consider graph (C)
The graph starts with a sharp but steady decrease, is followed by a constant line with minimum value (the minimum number of customers per minute), and then there is a slow but steady increment.
Consider graph (D)
The graph starts with a slow but steady decrease, is followed by a constant line with minimum value (the minimum number of customers per minute), and then there is a sharp but steady increment.
Therefore, the graph (A) models the trend the manager notices.
Learn more about the graph here:
https://brainly.com/question/10363060
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