Factor the following polynomial. 49y2 – x2 a. (7y – x)(7y + x) b. (7y + x)2 c. (7y – x)2 d. does not factor

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

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

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9