Dont reply to this unless its chrisy

How can we find the measure of an exterior angle if we know the measurement of an interior angle

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Kayla has a $500 budget for the school party. she paid $150 for the decorations. food will cost $5.50 per student. what inequality represents the number of students, s, that can attend the party?