Ivaries inversely with x and x=3.25 when y=4.5 what is the value of the x when y=3.75
a) 5.2
b)3.9
c)2.7
d)3.2

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

Plz heeeeeeelp plz give me the answer

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?