A farmer wants to have a water pipe installed from the water source to his farmhouse. He has two options. He can have the water pipe follow the rural roads. This option costs $50/m. He can have the water pipe go directly to the farmhouse, through his field. This option costs $40/m. a) What is the cost of running the water pipe directly from the water source to the farmhouse? b) What is the cost of running the water pipe to the farmhouse along the rural roads? (Round your initial answer for the distance to the nearest metre.) c) Which is the better option? Explain