is there anyone kind enough to help me with some math? Sorry, I'm trying to babysit my brothers and cousins and I just can't think straight. It's not hard at all, I'm just brain dead

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Based on the figures as marked, /\rqs = —

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