In 2000, there were 1000 cell phone users in a city. The number of cell phone users increased by 20% each year after 2000. a Make a table of values to represent this situation.
b. Is there a common difference or a common ratio? If so, what is the common difference or common ratio?
c. Is this situation modeled by a linear function or an exponential function? Explain.​

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?