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Current time:0:00Total duration:0:59

- [Instructor] We're told a
store has five different lengths of extension cords for sale as shown in the table above or to the left. If the range of lengths of
the five cords is seven feet, what is the greatest possible value of x? Pause this video, and
try to figure that out. Well, let's just remind
ourselves what the range is. The range is going to be equal to your high value minus your low value. And we want to maximize, we want to figure out the
greatest possible value of x. So let's just assume that
our high value here is x. And then what's going to be our low value? Well, our low value is this
six feet right over here. And then we know that
the range is seven feet. And so we get seven is
equal to x minus six. You could add six to both sides, and you would get that x is equal to 13. That's the greatest possible value of x.