A ( t ) = A0 * 1.15^t
A ( 3 ) = 16 * 1.15^3
A ( 3 ) = 21.296 m^2
b.)
A ( -1 ) = 16 * 1.15^{-1}
A ( -1 ) = 13.91 m^2
c.) 1.15 = 1 + 0.15 = 100 / 100 + 15 / 100
Zunahme : 15 %
d.)
K ( t ) = K0 * 1.15^t
K ( t ) / K0 = 1.15^t | K ( t ) / K0 = 2 ist Verdoppelung
2 = 1.15^t
ln ( 1,15^t ) = ln ( 2 )
t * ln ( 1.15 ) = ln ( 2 )
t = 4.9595 Tage