A new car is purchased for 21100 dollars. The value of the car depreciates at 6% per year. To the nearest year, how long will it be
until the value of the car is 11000 dollars?

The car will take 10 years to depreciate down to 11000

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.