A camp program charges a registration fee and a daily amount. The total bill for 12 days is $338. The total bill for 19 days is $506. Slope can be represented by cost per day. Use x as the number of days and y as the total cost to represent this situation. Find the slope for this situation. What does it represent? Write a linear equation that models this situation. Use your equation to find the charge for 30 days. How many days of camp could someone attend with a budget of $530?