In the Formula N $\mathrm { N } = \mathrm { Ie } ^ { kt } , \mathrm { N }$

Multiple Choice

In the formula N $\mathrm { N } = \mathrm { Ie } ^ { kt } , \mathrm { N }$ N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 72 million cars in a certain
Country, decreasing by 3.4% annually. How many years will it take for this country to have 47 million cars?
Round to the nearest year.

A) 7 yr
B) 95 yr
C) 13 yr
D) 3 yr