Asked by Savage

The width of a rectangle is 30 centimeters. Find all possible values for the length of the rectangle if the perimeter is at least 768 centimeters.
Answered by Steve
there are infinitely many possible values:

2(30+L) >= 768
30+L >= 384
L >= 354

so, any number at least 354 will work.

I suspect you did not ask the right question.
Answered by Ms. Sue
P = 2L + 2W

768 <= 2L + (2 * 30)

768 <= 2L + 60

708 <= 2L

354 >= L

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