Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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9. The arch of a train tunnel is in the shape of a parabola. The maximum height of the tunnel is 20 m. If the origin of a grid is placed at one end of the arch where the tunnel contacts the road, the other point of contact with the road is 40 m away. Which quadratic function can be used to model the arch?

||
Option 1
h
܀ ܝܚ
||
1
x+ 2x
20
Option 3
-x + 20x
1 — —20x2 + 40x
Option 2
1 — x? + 40x
Option 4
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Transcribed Image Text:|| Option 1 h ܀ ܝܚ || 1 x+ 2x 20 Option 3 -x + 20x 1 — —20x2 + 40x Option 2 1 — x? + 40x Option 4
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