How do i do this?

143.3333 = 1.02^x   Take logs of both sides and use the property of logs that  ln(a^b) = b*ln(a)   (where ln is log to the base e)

 

ln(143.3333) = x*ln(1.02)    Divide both sides by ln(1.02)

 

x = ln(143.3333)/ln(1.02)  

 

x = 250.7330

.

im the op.

 

thanks a lot man much appreciated.