Solve 5x–8 = 15.
Please solve this

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?

Will give a: 122 b: 90 c: 48 d: 180

Explain how you can show five less than a number using an algebraic expression