Final answer:
To find the graph with the slope representing the number of customers served per hour, we need to calculate the average number of customers served per hour. The slope would be 60, so the graph with a slope of 60 represents the number of customers served per hour at the restaurant.
Step-by-step explanation:
In this case, we need to find a graph with a slope that represents the number of customers served per hour. To determine the slope, we can use any two points on the graph. Let's say the graph has a time axis (x-axis) and a number of customers axis (y-axis).
From the given information, we know that 600 customers were served during a 10-hour period of time. This means, on average, 600/10 = 60 customers were served per hour. So, the slope of the line representing the number of customers served per hour would be 60.
Therefore, the graph with a slope of 60 best represents the number of customers served per hour at the restaurant.