A railroad crew can lay 5 miles of track each day. They need to lay 140 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) = 140-50
Answer the following
(a) How many days will it take the crew to lay all the track?
I days
(b) How many miles of track does the crew have left to lay after 18 days?
miles
1 answer:
Answer:
a) 28 days
b) 50 miles
Explanation:
a) 5 miles a day
140 miles ? days
140÷5= 28 days
b) 5 miles a day
? miles 18 days
18×5= 90 miles
140 miles - 90 miles = 50 miles
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