9. In late December of 2019 your city's new laws require buildings like your 25-unit co-op to reduce their GHGs by at least 40% by the end of 2030. Your building concludes this can be accomplished by converting from centralized oil-fired steam heat to individual multisplit heat pumps in each apartment. The co-op board decides to begin saving up for such an installation, and estimates that after utility rebates, it will cost $30,000 per apartment in 2030. Starting in January of 2020, how much should it place in an account yielding 4% per year in order to have enough money to fund the installation at the end of 2030? (5 points)