You plan to go from Portland to Tucson. Let x be the distance in miles of any flight between Portland and Tucson.

Question

Can you write an inequality that represents the mileage of any route between Portland and Tucson?

oi41 dot tinypic dot com/29dbjm0 dot jpg

I have 1129 >= x >= 973. Is this correct?

Answer 1

I like the x >= 973

But the other, not so much. Logically, you may be right as to a practical flight. But, any flight using the available data, which does not repeat a leg, includes the

Portland-SanDiego-Boise-Seattle-LasVegas-Tucson

connections.

Answer 2

It says that no more than one layover is allowed.

Answer 3

ah, now you start changing the rules. So, I guess you are correct.