[填空题]
On 1st of January 2022 , c2yujg.3 :ya oGracenp 4y5jo9 .thbjl .1jylmd/ +j invests P dollars in an account that pays a nominal annual interest rate of 6 % , compounded quarterly. The amount of money in Grace's account at the end of each year follows a geometric sequence with common ratio, j tjhjm5l py94jodb/ l.y+n1 . $\alpha$ .
1. Find the value of $\alpha$ , giving your answer to four significant figures.
Grace makes no further deposits or withdrawals from the account.≈
2. Find the year in which the amount of money in Grace's account will become triple the amount she invested. years
