Which shows the equation below written in the form ax^2 + bx + c =0? x^2+7x+9=0

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Which expression gives the area of the triangle shown below

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?