ASAP plz answer 1-2-3 thank you

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

What is the greater volume 72 quarts or 23 gallons

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?