This is my calculus homework can someone please help me

Find the nonpermissible replacement for binthis expression.b2/5b +5

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.

I’m really confused and need your assist me with this question i’ve never been taught