Plz help this is urgent

What is the y intercept of f(x)=(1/2)^x?

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

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.