I am new and I have not received any help with my algebra homework please help me as soon as possible please

Question

1.) Which function should be used to when evaluating the function at x = 3?

A.)

B.)

2.) A computer training institute has 625 students paying $400 as the course fee. Their research shows that for every $20 reduction in their fee, they will attract another 50 students. Which table represents this situation?

A.) 

B.)

C.)

D.)

please please explain and solve please

Answer 1

1) p(x) = 1/x² + 1 if x ≤ 3

It is clear that x= 3 is included, so you have to use this function.

2) Loo k at table D, and compare the given information with the data written inside the table.