The arithmetic sequences are 3rd one, and 5th one as they are increasing or decreasing by a constant rate of change
Pentagons are and example.
Elimination is x=3 since you can cancel our out the 3y just add the 8 and 2 which is 10 and 18 and 12 which is 30, devide and there ya go
Its 72 degrees i just did this one plato
