Roadways are crowned to let rain run off to the shoulders of the road, as illustrated in the diagram. y road shoulder A crown (highest point) X level ground B road shoulder The width of the roadway, AB, is 18 feet. A function f that models the curved road surface is f(x) == 0.005x(x-18). Which of these statements are true? Select all that apply. A. The y-coordinate of the crown occurs at x = 9. B. The crown is 9 feet above level ground. C. The y-coordinate of the crown is approximately 0.4. D. The x-intercepts of f are 0 and 18. E. The x-coordinate of the crown is the average of the x-intercepts of f..

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
ChapterA: Appendix: Review Topics
SectionA.3: Introduction To Functions
Problem 29PS: Suppose you have a job that pays $8.50 per hour and you work anywhere from 10 to 40 hours per week....
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3. Roadways are crowned to let rain run off to the shoulders of the
road, as illustrated in the diagram.
road shoulder A
crown (highest point)
X
level ground B road shoulder
The width of the roadway, AB, is 18 feet. A function f that models
the curved road surface is f(x) == 0.005x(x
18).
Which of these statements are true?
Select all that apply.
-
A. The y-coordinate of the crown occurs at x = 9.
B. The crown is 9 feet above level ground.
C. The y-coordinate of the crown is approximately 0.4.
D. The x-intercepts of f are 0 and 18.
E. The x-coordinate of the crown is the average of the
x-intercepts of f.
Transcribed Image Text:3. Roadways are crowned to let rain run off to the shoulders of the road, as illustrated in the diagram. road shoulder A crown (highest point) X level ground B road shoulder The width of the roadway, AB, is 18 feet. A function f that models the curved road surface is f(x) == 0.005x(x 18). Which of these statements are true? Select all that apply. - A. The y-coordinate of the crown occurs at x = 9. B. The crown is 9 feet above level ground. C. The y-coordinate of the crown is approximately 0.4. D. The x-intercepts of f are 0 and 18. E. The x-coordinate of the crown is the average of the x-intercepts of f.
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