Using continuous compounding, we have:
90000=65452 x e^.091t
1.3750534743017784024934303000672=e^.091t
ln 1.3750534743017784024934303000672=ln e^.091t=.091t ln e=0.091t
t=3.5 years
To travel 13 mph it would take roughly 8.2 minutes !
1) 1/2
2) 7/8
3) 4
4) 19/8 = 2 3/8
24 laps
1 hour = 60 minutes
4/10 x 60 = 24
