What is m(A enter your answer as only a number (2x+1)° 5x+5)°

Is this a polynomial function? i need to know asap

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

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