12: The student council is planning an activity night to raise money. The student council will charge $5 per student to attend the activity night. Part A Write an expression that can be used to calculate the amount of money collected for n number of students. Enter your expression in the space provided. Enter only your expression. Part B The cost to rent the school is $200. The student council has a goal to raise $350 after paying the rental fee. How many students will need to attend the activity night for the student council to pay for the rental fee and reach their goal? Show or explain all the steps you used to solve the problem. Enter your answer and your work or explanation in the space provided.