A railroad crew can lay 6 miles of track each day. They need to lay 168 miles of track. The length, L (in miles), that is left t
o lay after d days is given by the following function.
L (d) = 168 - 6d
How Many Days Will It Take The Crew To Lay All The Track?
How Many Miles Of Track Does The Crew Have Left To Lay After 17 Days ?
1 answer:
How many miles of track does the crew have left to lay after 17days
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Step-by-step explanation:
a) The total cost C is given by
![C = \$60n + \$40](https://tex.z-dn.net/?f=C%20%3D%20%5C%2460n%20%2B%20%5C%2440)
b) If the total cost is $400, then we can solve for the number of hours as
![\$400 = \$60n + \$40 \Rightarrow \$360 = \$60n](https://tex.z-dn.net/?f=%5C%24400%20%3D%20%5C%2460n%20%2B%20%5C%2440%20%5CRightarrow%20%5C%24360%20%3D%20%5C%2460n)
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