The domain of the graph that Antonio is creating is all the x-values or inputs and would show 4 p.m. (2 hours before the peak dinner time), 6 p.m. (peak dinner time), and 8 p.m. (2 hours after the peak dinner time).
When making or evaluating a graph, the domain shows the x-values from left to right. The opposite of the domain of a graph is the range. The range shows the y-values from down to up.
In this graph by Antonio, the y-values would show the sales values or units that the restaurant recorded at 4 p.m., 6 p.m., and 8 p.m., respectively.
Thus, the domain of Antonio's peak dinner time graph will show all the x-values or inputs about the three-time intervals.
Learn more about the domain of a graph here: https://brainly.com/question/21394181
