1. According to statistics, the number of students driving in Shanghai has increased greatly every year. In 2003, it was197,000, and in 2005 it reached 250,000. Let the average annual growth rate be x, and set the equation according to the meaning of the question:

Solution: 19.7 * (1+x) 2 = 25.

2. Deposit 10000 yuan in the bank, with the annual interest rate of X%, and deposit the principal and interest for another year after the expiration of one year, with the annual interest rate unchanged. At maturity, the sum of the principal and interest is _ _ _ _ ten thousand yuan.

Solution: 1 * (1+x%) 2