(a) How would you characterize the relationship between the hours spent on homework and the test scores? Explain. (b) Paul uses the equation y = 7x + 50 to model the situation. What score does the model predict for 4 hours of homework? Show your work.
(c) What does the number 50 in Part (b) mean in the context of the situation?

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