A construction crew is lengthening a road. The road started with a length of 56 miles, and the crew is adding 4 miles to the road each day.

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

this equation to find the total length of the road after the crew has worked 39 days.

Question

Mathematics

Dixie Adams

2 September, 02:16

A construction crew is lengthening a road. The road started with a length of 56 miles, and the crew is adding 4 miles to the road each day.

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

this equation to find the total length of the road after the crew has worked 39 days.

+4

Answers (1)

Know the Answer?

Dylan Short · Answer 1

4d+56=L

4 (39) + 56=L

L=212

Step-by-step explanation:

4 miles per day added on to the already existing 56 miles equals the total length.

When subbing in 39 for the number of days (or variable "d" in the equation), and following the order of operations, you get 212 miles of road total at the end of the 39 days.