The president of a large bank with many branch offices wanted to know if the quality of customer service at a new branch office was acceptable . One aspect of service that was examined was the length of time that customers had to wait in line before being helped by a member of the bank's staff . The bank decided on acceptable probabilities for the waiting time categories , and these are given in the table below .

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.

12

step-by-step explanation: