If the arc length shown in blue is 21.3 inches, then e to the nearest hundredth
of a radian is

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?

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Can someone show me step by step how to do this?