Doc Brown's custom-made flux capacitor requires an investment of $80, 000 and has no market or salvage value, no matter how long it is used. Operating expenses in year k are given by C_k = $10, 000 $6, 000*(k-1). Because Doc uses the flux capacitor to travel through time, he has a MARR of 0%. Find the EUAC corresponding to the economic lifetime of the flux capacitor, rounded to the nearest dollar.