Each issue of soccer world magazine costs $5.99 at the book store. a 6-month subscription costs $24.99. how much can a reader save by subscribing to the magazine for 6 months?

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.