You want to find the time <em>t</em> such that

Divide both sides by $200 :

Take the logarithm of both sides:

Divide both sides by 0.04 and solve for <em>t</em> :

1. is the third choice
2. is second choice
3. is fourth choice
The domain of G is 4 and the range of G is 9 (domain=x, range=y :))
Wavelength denotes the time for one cycle of a periodic process
sqrt(29) = 5.385
This means it is inbetween 5 and 6.