What is 2x + 5y - 2x?​

Measures of the angle of r, 31 s (x+4) t (3x+9)

Which number completes the inequality? 2/3 < _ < 7/9

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