The cost C (in dollars) of building a house is related to the number k of carpenters used and the number e of electricians used by the following formula.'r C = 15,000 + 50k2 + 6er If the cost of the house is fixed at $200,000, find i . (Round your answer to three decimal places.) '18 e=15 dk . . d = [: carpenters per electrICIan 9 6:15 Interpret your result. This means for a $200,000 house whose construction employs 15 electricians, adding one more electrician would cost approximately :] additional carpenters. In other words, one electrician is worth approximately [: carpenters