Markers are on sale for $4.50 for black, $3.25 for red, and $1.98 for green. he spends a total of $284.24. if he buys a certain number of black markers, twice the number of black markers in red, and three times the number of black markers in green, how many of each color did this person purchase?

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?