Rosana is tracking how many customers she can serve in a morning. She listed the number of customers served per hour in the following table:
Hour (x) Number of Customers f(x)
1 3
2 5
3 7
Determine if these data represent a linear function or an exponential function, and give the common difference or ratio.
A. This is a linear function because there is a common difference of 2.
B. This is an exponential function because there is a common ratio of 2.
C. This is a linear function because there is a common difference of 3.
D. This is an exponential function because there is a common