Using the .set() function, set the following parameters:

• limit values on the x-axis to (0, 30000);
• limit values on the y-axis to (40, 80);
• set ticks on the x-axis so that they will have a step of 5000 (for instance, 0, 5000, 10000, 15000, ...). You can use the np.arange(start, end, step) function there. It will generate numbers from start to end with the step of step.