Help me please

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

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

With alll of except for the 2 that i did already