What is the common factor, GCF, of -20x^2 and x?

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The function models the number of accidents per 50 million miles driven as a function

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2