The bridgeport water department has a monthly service charge of $15.60 and a volume charge of $1.94 for every 100 cubic feet of water. which of the following equations can be used to determine the morgan family's monthly water bill? (let x represent 100 cubic feet of water and y represent the monthly cost) a. y = 0.0194x + 15.60 b. y = 1.94x - 15.60 c. y = 1.94x + 15.60 d. y = 17.54x