Help and explanation and giving brainliest

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?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Which graph represents the linear function below? y-3=1/2(x+2)