What is the day of thanksgiving

Which of those sequences is a geometric sequence

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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