A man is walking down a very long flight of steps in a stairwell. He begins at 136 feet above ground level. He walks down with a steady rate such that he gets closer to the ground floor at a rate of 2.8 feet per second. The man is going to exit the stairwell at the 4th floor, which is the height of 42 feet above ground level. Let t be equal to the number of seconds it takes for him to get to the 4th floor. Set up and solve the equation to find the value of t. Round your answer to the nearest tenth of a second.
A man is walking down a very long flight of steps in a stairwell. He begins at 136 feet above ground level. He walks down with a steady rate such that he gets closer to the ground floor at a rate of 2.8 feet per second. The man is going to exit the stairwell at the 4th floor, which is the height of 42 feet above ground level. Let t be equal to the number of seconds it takes for him to get to the 4th floor. Set up and solve the equation to find the value of t. Round your answer to the nearest tenth of a second.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.6: Solving Quadratic Equations By Using The Quadratic Formula
Problem 64PFA
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Question
A man is walking down a very long flight of
steps in a stairwell. He begins at 136 feet
above ground level. He walks down with a
steady rate such that he gets closer to the
ground floor at a rate of 2.8 feet per second.
The man is going to exit the stairwell at the
4th floor, which is the height of 42 feet above
ground level. Let t be equal to the number of
seconds it takes for him to get to the 4th floor.
Set up and solve the equation to find the value
of t. Round your answer to the nearest tenth
of a second.
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