You work at a global engineering and construction firm and are tasked to provide a budget for a nuclear plant. A portion of the budget needs to account for decommissioning after the lifetime of the project. The client has expected the project's lifespan to be 35 years and wants to account for $1 billion for decommissioning. What amount did you provide in the estimate for decommissioning? What was your assumed interest rate? What is the value of those funds if the lifespan reaches 40 years? Back to the first part, assume you underestimated your interest rate by 1%. How much is not accounted for?