Which of the following does not represent a function?

Me what is the value of x? showing work would be appreciated - ! : )

Name the most appropriate metric unit for each measurement like the mass of cow

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