Need help with this question please

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?

Find the distance between (7,-6) and (-3,-9)

Which graph represents the given linear function 4x+2y=3