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

Respuesta :

Answer:

  • 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.