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Verizon [17]
2 years ago
11

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

Mathematics
1 answer:
Kazeer [188]2 years ago
8 0

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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