How long does it take for an investment to double in value if it is invested at 7​% compounded monthly question mark Compounded​ continuously?

Answer 1

2p = p(1 + 0.07/12)^12t

2 = (1.005833)^12t

ln 2 = 12t ln 1.005833)

2p = pe^rt

ln 2 = 0.07t