State the number of complex roots, the number of positive real roots and the number of negative real roots of x^4 - x^3 - 6x +3 =0.
complex roots 2 or 4
positive reall roots: 2 or 0
negative real roots 0

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books