2. Determine the type and degree of each of the following polynomial expressions.
9x^4t^9
X^4 - 3x^2+ 7x^5
19a^6b^2 + 8ab^3 - 27a^7

What point is the projection of q on a) r b) s c) t

What is not true about kl and mn? what is mn? (show your work)

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?