Answer to Question #87917 in Algebra for bob

Question

The Bedrock water department has a monthly service charge of $8.40 and a volume charge of $1.81 for every 100 cubic feet of water. Which of the following equations can be used to determine the Sandstone family's monthly water bill?

(Let x represent 100 cubic feet of water and y represent the monthly cost.)
A.
y = 10.21x
B.
y = 0.0181x + 8.40
C.
y = 1.81x + 8.40
D.
y = 1.81x - 8.40

Answer 1

The monthly water charge is $ 8.40. Consequently, we do not consider variants A and D. Of the remaining variants, the correct C would be because the question says that x represent 100 cubic feet of water. In variant B, x represent only 1 cubic foot of water.

Answer: С.

$$y = 1.81x + 8.40$$