The rental rate for a hedge trimmer has a one time fee of $20 plus $30 for each day of the rental. the graph shows points representing the total cost of the rental. a function graph of a ray with three points (0,20), (2,80) and (3, 110) with an x axis of zero to five days and a y axis of zero to one hundred forty in total cost which linear equation, in slope-intercept form, that models the total cost of the rental over time? y = 2x + 80 y = 20x + 30 y = 30x + 20 y = 30x y = 20x