some students on a cross country team attend an outdoor adventure activity with chaperones. the admission cost is $10 for each student and $15 for each chaperone. three students are assigned to each chaperone. there is also a one-time team registration fee of $20. the total cost for this activity is $200.
Part A: Write an equation to determine x, the number of students who attend the activity.
Part B: Solve the equation you wrote for Part A, justifying each step in the process.
