An employee works for a courier company and is paid $12 per hour. The employee works between 52 to 125 hours every month. The function P (n) = 12n represents the amount paid to the company’s employees for n hours of work. What is the domain of the function?
A. all real numbers
B. 12 ≤ n ≤ 52
C. 12 ≤ n ≤ 125
D. 52 ≤ n ≤ 125

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?