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24 March, 03:54

A construction crew is lengthening a road. The road started with a length of 53 miles, and the crew is adding 3 miles to the road each day.

Let L represent the total length of the road (in miles), and let D represent the number of days the crew has worked. Write an equation relating L to D. Then use this equation to find the total length of the road after the crew has worked 31 days.

Equation:

Total length of the road after 31 days: - miles

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Answers (1)
  1. 24 March, 04:00
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    L = 53 + 31D 146 miles

    Step-by-step explanation:

    The added miles will be 3D, so the total miles will be ...

    L = 53 + 3D

    When D=31, the total length of the road is ...

    L = 53 + 3·31 = 146

    The total length after 31 days is 146 miles.
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