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 to 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

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

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

486in is correct

step-by-step explanation: