Algebra 1 .
question: which statement describes the graph?

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?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Tom drove 206 miles in 3.9 hours. estimate his average speed.