ZipCar allows customers to reserve rental cars online and pay for them by the hour - picking up and dropping off vehicles at convenient neighborhood spaces without entering an office to do paperwork. Since its inception, ZipCar has experienced extremely fast growth. Why?

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

entering that problem on the tube might get you an answer

a - base

b - exponent

so,

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: