Let a, b, and c be real numbers where a ≠ b ≠ c ≠ 0. Which of the following functions could represent the graph below? a. f(x) = x2(x – a)2(x – b)4(x – c)
b. f(x) = x3(x – a)3(x – b)(x – c)2
c. f(x) = x4(x – a)(x – b)3(x – c)3
d. f(x) = (x – a)2(x – b)(x – c)6

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?