Answer:
Company B, since 40 > 25 and 40 > 35
Explanation:
Company A:
With each window more, price increases by 25
Company B:
15, 55, 95, 135, 175
With each window, the price increases by 40
Company C:
y = 35x + 25
x = number of windows
If x increases by 1, the price increases by 35, therefore, this is the increase per window