Evaluate the given expression
8•(5+4)-6•9+7

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?

Select the graph of the solution. click until the correct graph appears. |x| = 3

Change negative exponents to positive. then solve. round to four decimal places