The level of the water in a river rose 2.2 feet on Monday, rose 7.6 feet on Tuesday, fell 2 feet on Wednesday, and fell 7.6 feet on Thursday. What was the total change, in feet, of the water level in the river between Monday and Thursday? 0.2

9.8

7.6

9.6

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Icould really use some with this question.

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?