a helicopter hovers over a park. the pilot sees a person who is looking for their dog. the angle of depression from the pilot to the dog is 63 degrees and the angle of depression from the pilot to the owner of the dog is 48 degrees. if the dog is 70 feet ahead of the owner, and the helicopter flies over the line joining them, how high is the helicopter? round your answer to the nearest tenth of a foot

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?