Does anyone know the answer to this?

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Which one ? is the answer and how to find this answer