A small school employs 555 teachers who make between \$40{,}000$40,000dollar sign, 40, comma, 000 and \$70{,}000$70,000dollar sign, 70, comma, 000 per year. The newest teacher, Valerie, decides to teach part-time which decreases her salary from \$40{,}000$40,000dollar sign, 40, comma, 000 to \$20{,}000$20,000dollar sign, 20, comma, 000 per year. The rest of the salaries stay the same. How will decreasing Valerie's salary affect the mean and median?

In the diagram below what is the approximate length of the minor arc ab

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?

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50