A railroad crew can lay 5 miles of track each day. They need to lay 135 miles of track. The length, L (in miles), that is left to lay after d days is given by the following function. L(d) = 135-5d Answer the following questions. (a) How many miles of track does the crew have left to lay after 18 days? M miles (b) How many days will it take the crew to lay all the track? I days

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.2: Domain And Range
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A railroad crew can lay 5 miles of track each day. They need to lay 135 miles of track. The length, L (in miles), that is left to lay after d days is given by the
following function.
L(d) = 135-5d
Answer the following questions.
(a) How many miles of track does the crew have left to lay after 18 days?
M miles
(b) How many days will it take the crew to lay all the track?
I days
Transcribed Image Text:A railroad crew can lay 5 miles of track each day. They need to lay 135 miles of track. The length, L (in miles), that is left to lay after d days is given by the following function. L(d) = 135-5d Answer the following questions. (a) How many miles of track does the crew have left to lay after 18 days? M miles (b) How many days will it take the crew to lay all the track? I days
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