Question

using the graph shown, which is patients waiting times in minutes at a hospital emergency room, what does the point (20.5, 13) represent?

an average of 20.5 patients waited 13 min.
at 20.5 minutes into the shift there were 13 people waiting
13 people waited 20.5 minutes or less
13 people waited 20.5 minutes

Explanation:

In a graph representing waiting - times, the x - coordinate often represents time, and the y - coordinate represents the number of people. Here, 20.5 on the x - axis likely represents a time value (20.5 minutes), and 13 on the y - axis represents the number of people waiting at that time.

Answer:

at 20.5 minutes into the shift there were 13 people waiting