SOLUTION: The thickness of concrete that lines a swimming pool is a function of the depth of the pool. If d represents the depth, in feet, of the pool and t(d) represents the thickness, in i
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Question 551007: The thickness of concrete that lines a swimming pool is a function of the depth of the pool. If d represents the depth, in feet, of the pool and t(d) represents the thickness, in inches, of the concrete, then t(d)=. Of the following, which is the closest approximation to the thickness, in inches, of the concrete at a depth of 10 feet?
A) 0.5 B)1.5 C)6.2 D)7.2 E) 10.5
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Replace d with 10.
 = \frac{1}{12}(10^2 - 2(10) + 6) \approx 7.2)
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