To write the equations for Anita's and Abby's water bills, you can use the information provided about their water service costs.
-
Anita's water bill:
The cost is 30 cents per gallon and a service charge of $25 per month.
This can be written as: \[ y = 0.30x + 25 \] -
Abby's water bill:
The cost is 10 cents per gallon and a service charge of $35 per month.
This can be written as: \[ y = 0.10x + 35 \]
So, the system of equations is:
- Anita’s water bill: \( y = 0.30x + 25 \)
- Abby’s water bill: \( y = 0.10x + 35 \)