What division problem is being modeled? Please ignore the 3/4!

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

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.

25 ! i need asap! ! ill mark brainliest!