Can anyone please help me on this Math problem? I am desperate!

a. You are helping to organize a fund-raising concert for your community awareness group. You will sell tickets in advance of the concert for $20 each and for $30 each on the day of the show. Your club has a goal to raise $6,000. Write the function to represent this scenario in standard form. Draw the graph of the function to represent how many of each type of ticket you will need to sell. If you only sell tickets in advance, how many tickets do you need to sell? Where will you find this on the graph? If you only sell tickets on the day of the show, how many tickets do you need to sell? Where will you find this on your graph? Identify the domain and the range of the function.