Answer:
The maximum height of an ad that the company can afford is 20 inches.
Explanation:
2,050 = 50 + 10(h * w),
where h is height, w is width and h = 2w.
2,050 = 50 + 10(h * w)
(subtract 50 from each side)
2,000 = 10(h * w)
(divide each side by 10)
200 = h * w
(substitute 2w for h)
200 = 2w * w
(divide each side by 2 and simplify)
100 = w * w
100 = w²
(find the square root of each side)
10 = w
So if the width is 10, then since the height is twice the width, then the height has to be 20.