The rental rate for a cement mixer has a flat rate of $40 plus $20 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 (0,40), (2,80) and (3, 100) 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 = 50x + 25 y = 75x y = 20x +40 y = x + 50 y = 25x

y = 20x + 40

Step-by-step explanation:

Given that the rental rate for a cement mixer has a flat rate of $40 plus $20 for each day of the rental.

That means fixed one time cost is $40 which doesn't changes with time.

If number of days is represented by "x" then rental cost for "x" days will be 20 times x or just 20x.

So the final cost will be sum of fixed cost and the rental cost per day which is:

20x+40

Now if "y" represents total rental cost over time then final cost equation can be written as:

y = 20x + 40

Hence final answer is y = 20x + 40y = 20x + 40.

i hope this is what you were looking for.

see attached graph