Fifty people are seated in a movie theater. the maximum capacity of the theater is 425 people. write an inequality to represent the number p of additional people who can still be seated.

This is the concept of inequalities:
maximum capacity for the theater=425
Number of people in the theater=50
thus the inequality for the that will represent the number p of additional people who can be seated will be:
50+p≤425
hence:
p≤(425-50)
p≤375

p≤375