Jason started with 12 1/2 pounds of concrete to set fence posts. He used 4 1/6 pounds for the center post and 3 1/3. pounds for the end post. How many pounds of concrete does Jason have left? A. 20 B. 4 1/6 C. 5 D. 18 1/3 PLEASE QUICK​

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?