The second option. The 5.5w part shows that its $5.50 times each window. The -3.25 is because he deducted 3.25 from the total. And then you have the price that he got on the other side.
Here's the work to find the windows in case you want it:
5.5w-3.25=35.25
5.5w=38.50
w=7
He washed 7 windows
You have the formula already, just plug in 30 for s (speed) and solve for d (distance).
Your answer would be A.
according to the 30°, 60°, 90° triangle rules,
side a would equal x

and side c would equal 2x
I wasn't sure what properties the assignment was looking for... Let me know if you have any other questions!