Can someone help me? This is my 4th time trying to get help. Thanks! :)

What is the inverse of the function f(x) = 2x + 1?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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?