Find the product write the product as a mixed number

What is the solution of the systems of equations? y=2/3x+3 x=-2

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?

W-16=-12 solve each one step equation plz