The table shows the ratio between the Number of books ordered and their cost. Find equivalent ratios when the number of books ordered is 1,2 and 3. Write them as ordered pairs in the form X coordinate and Y coordinate. Starting from the origin, how to plot the three equivalent ratios on a coordinate grid. 10 points

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =