I really really need help I’ve been posting some of the same questions and nobody is answering them and I NEED them to be answered please... it’s due today guys so if your good at math PLEASE help me with my questions please

What is the base of 1/9 to the power of 2

How can constraints be used to model a real-world situation?

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?