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 ratio of 3.