What is the product?
(-2d^2 + s) ( 5d^2-6s)

Based on what i know about mean, this doesn't add up.

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?

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract