James started tutoring children several times a week. The first 2 weeks he had to purchase tutoring supplies and had losses of $40 and $65. The next 3 weeks he made a profit of $105, $70, and $140. At the end of the 6 weeks, he had a net profit of $252.
1. Write an equation to find the profit or loss for the 6th week in this situation.
2. Solve your equation.
3. Was there a profit or a loss for that week?
4. What was James's average profit or loss for the 6 weeks?