Lindsay will lay a certain number of 18in. square tiles in a line to form a walkway. which of the following is not a possible length for the walkway if she uses only whole tiles? (a) 6ft (b)10ft 6in (c)32ft

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?