The quadratic expression x2 – 2x – 35 can be factored into (2+5)(x - 7). Which ordered pairs represent the zeros of this expression's related quadratic function?
A (5,0) and (-7,0)
B (-5,0) and (7,0)
C (0,-5) and (0,7)
D (0,5) and (0, - 7)

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?