Online exponential growth/decay 계산기.
x(t) = x0 × (1 + r) t
x(t) is the value at 시간 t.
x0 is the initial value at 시간 t=0.
r is the growth rate when r>0 or decay rate when r<0, in percent.
t is the 시간 in discrete intervals and selected time units.
x0 = 50
r = 4% = 0.04
t = 90 hours
x(t) = x0 × (1 + r) t = 50×(1+0.04)90 = 1706
