Could you explain to me how I'm supposed to solve this and all the steps?

Acircle has a circumference of 28.36 units what is the diameter of the circle

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

Which of the functions below could have created this graph?