Identify 11 as either rational or irrational, and approximate to the tenths place. a. rational: /(11)~3.3 b. rational: /(11)~3.4 c. irrational: /(11)~3.3 d. irrational: /(11)~3.4

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

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?

Will mark brainliest! ( explain the answer too, it can be one sentence)