$205 is invested at 4% per year simple interest for 6 years. After this time the principal plus interest is reinvested at 8% per year simple interest for 4 more years. What is the value of the investment after 6 years.​

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?