<h2>
Answer:</h2>
Option: A is the correct answer.
A. This is a linear function because there is a common difference of 2.
<h2>
Step-by-step explanation:</h2>
<u>Linear function--</u>
A function is said to be linear if the rate of change is constant.
i.e. the function is increasing by a fixed constant.
Here the table is given by:
Hour (x) Number of Customers f(x)
1 3
2 5
3 7
From the table of values we observe that as the value of increasing by 1 the value of y is increasing by 2.
i.e. the rate of change is constant i.e. 2.
Also, the common difference is 2.
since,
5-3=2
and 7-5=2
Hence, the table represents a linear function.