The cost of a large flat screen tv is decreasing 20% per year.
if a 50 inch flat screen cost $1200, what will it cost in 3 years

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.

one that is bigger than 3 1/2