Answer:
You can find the drawing in the attached file
Explanation:
You have fixed cost of $100 whter the machine is used or not and a variable cost of $50 for each hour used. So if you do not use de machine the cost will be $100, if the machine is used 1 hour the cost will be $150 and will increase $50 per aditional hour, until it reaches $500 ($100 + 8*50)
The drawing must have two variables, one is cost and the other is hours.
Cost start from $100 when the machine is not used and grows $50 per hour