Jenny was reviewing the water bill for her doggy day spa and determined that her highest bill, $3,000, occurred in July when she washed 2,000 dogs and her lowest bill, $2,000, occurred in November when she washed 1,000 dogs. What was the fixed cost associated with Jenny's water bill?

Question

Quizplus · Accepted Answer

The fixed cost can be determined by setting up equations based on the given information and solving for the fixed cost. Let $x$ be the variable cost per dog washed and $y$ be the fixed cost. From the information given:For July (2,000 dogs, $3,000 bill): $2000x + y = 3000$For November (1,000 dogs, $2,000 bill): $1000x + y = 2000$Subtracting the second equation from the first gives $1000x = 1000$, so $x = 1$. Substituting $x = 1$ into either equation, say the second one, gives $1000*1 + y = 2000$, so $y = 1000$. Therefore, the fixed cost associated with Jenny's water bill is $1,000.

Jenny Was Reviewing the Water Bill for Her Doggy Day