Prove that the mean of any four consecutive integers is an integer

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 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?