Use mapping notation to describe a translation left 3 units and down 5 units. A. (x, y)->(x-3,y-5)
B. (x, y)->(x + 3, y - 5)
C. (x, y)->(x - 3, y + 5)
D. (x, y)->(x - 5, y + 3)

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?