A sheet of metal that is 30 cm wide and 600 cm long is to be used to make a rectangular eavestrough by bending the sheet an equal amount. How many centimetres should be turned up on each side to obtain the greatest volume for the eavestrough. Recall volume of a rectangular prism is V= L x W x H

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?