In South Korea there are 21 280 000 licensed vehicles on the road. Of these, 16 486 000 are private cars. What percentage of the licensed vehicles are private cars?

Sarah is collecting recyclables for a science project. on the first day she collected 35 recyclable objects. on the second day she had a total of 52 recyclables. on the third day she had a total of 69 recyclables. determine if the scenario describes an arithmetic or a geometric sequence. then, write the recursive formula for the sequence described.