PLZZZ HELP ME I BEGGING YOU THIS DUE TODAYplzzz answer all questions correctly plz and explain and give the answer 1. A driver’s elevation is -30 feet relative to sea level. She dives down 12 feet. What is the elevation after the dive? Show your work. (20 points)

2.Explain(In your own word) how to model -5+5+(-2) on the number line. (20 points)

3. How do you subtract an integer from another integer without using a number line ? Give an example. (20 points)

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?