Ok i have no idea how to calculate this one either, can someone me ?

What aspects of lines have to be diffrent

What is the standard form of -5x^2+2x^4-11+x^3+3x

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?