Answer:
Step-by-step explanation:
Answer:
The slope (m) = 1/3 and the y-intercept (b) = -4
A perimeter of a rectangle is:

They give you the width, but let's convert it to an improper fraction first:

The length is twice the width so it is:

Now, we are ready to solve, plug in values in the perimeter formula:

So, 40 is your answer.
70 kilometers because you have to multiply 3.5 by 20.
ANSWER
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