State of North Carolina has proposed to build a new dam to meet the energy needs of its residents. The dam will operate for the next 20 years. The dam will require an annual maintenance cost of $180,000. It will also require a detailed inspection every 5 years and this inspection is expected to cost $35,000 to the state. Annual bene- fits of the dam are estimated to be $380,000. The state uses an inter- est rate of 20% per year and a conventional B-C ratio of at least 3 for new investments. Using an annual worth analysis, determine the maximum investment cost allowed for the dam