Question

The Bridgeport water department has a monthly service charge of $12.30 and a usage charge of $1.59 for every 100 cubic feet of water. Which of the following equations can be used to determine the monthly water bill of a Bridgeport resident?
(Let x represent the amount of water used in hundreds of cubic feet and y represent the monthly cost.)

A. y = 1.59x - 12.30
B. y = 1.59x + 12.30
C. y = 13.89x
D. y = 0.0159x + 12.30

Answer 1

The answer is B.
The initial cost (per month) is 12.30, add on every 100 cubic feet of water (x) for 1.59. Monthly you 'd pay 12.30+1.59x