28x + 20y I think is the answer
The question is asking to compute on how many hours will it take them to paint the room and base on the question and the given data in the problem, I would say that the answer would be 1/7+1/6 = 1/x, 6.5 hours. I hope you are satisfied with my answer and feel free to ask for more
For this case the first thing that we must observe is the value of f (x) of the function in the table, when the value of x is x = -1
We then have that for x = -1, the value of the function is equal to 0.
Therefore, the following relationship is fulfilled:

Answer:
the value of f (-1) is:

B. since there are two sides that are 10, that equals 20. the other two sides are unknown, making the width 2w
Answer:

Step-by-step explanation:
Commission received on selling each storm window
of the selling price of each storm window
Commission received on selling each door
of the selling price of each door
Amount earned on selling storm windows = $5,400
Amount earned on selling doors = $28,790
Commission received on selling storm windows 
Commission received on selling doors 
Therefore,
Total commission received 