A railroad crew can lay 7 miles of track each day. They need to lay 189 mles of track. The length, L (In miles), that Is left to lay after d days is glven by the following function. L(d)= 189-7d Answer the following questions. (a) How many miles of track does the crew have left to lay after 19 days? |miles (b) How many days will it take the crew to lay all the track? | days

College Algebra
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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter3: Polynomial And Rational Functions
Section3.1: Quadratic Functions And Models
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A rallroad crew can lay 7 miles of track each day. They need to lay 189 mles of track. The length, L (In miles), that Is left to lay after d days is glven by the
following function.
L(d)=189-7d
Answer the following questions.
(a) How many miles of track does the crew have left to lay after 19 days?
miles
(b) How many days will It take the crew to lay all the track?
| days
Explanation
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Transcribed Image Text:A rallroad crew can lay 7 miles of track each day. They need to lay 189 mles of track. The length, L (In miles), that Is left to lay after d days is glven by the following function. L(d)=189-7d Answer the following questions. (a) How many miles of track does the crew have left to lay after 19 days? miles (b) How many days will It take the crew to lay all the track? | days Explanation Check Terms of Use 2021 McGraw-Hill Education. Al Rights Reserved US
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