I’m so confused and it would be very helpful if someone helped me or explained it to me

X+ y = 5 ; x - y =3 solve using linear combination

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.

Interpret the following expression (5y^2-7)^3/(2y)^2