Ii. Solve. 14.} 52400 is Invested in an account at interest rate r = 9%, compounded continuously. Find the time required for the amount to triple. [Round to the nearest year.) 15.) The number it of convenience stores in Southern Nevada from 2005 to 2012 can be modeled by y = 7312 - 630.0 In t, 5 s t s 12, where t represents the year, with t I- 5 corresponding to 2005. During which year did the number of convenience stores reach 5800