Question

A window washing company charges $550 to clean 20 windows and $775 to clean 35

windows. Determine:
The cost PER WINDOW
The flat fee charged by the company
Make an equation to represent this scenario.
Use your equation to determine the cost to clean 50 windows.
How many windows could you have cleaned for $880?​

Answer 1

The cost PER WINDOW = $15

The flat fee charged by the company = $250

Make an equation to represent this scenario. y=15x+250

Use your equation to determine the cost to clean 50 windows.

y=15x+250

y=15(50)+250

y=750+250

y=1,000

$1,000

How many windows could you have cleaned for $880?​

y=15x+250

880=15x+250

630=15x

42=x

42 Windows