Christi is doing her math homework. to receive full credit, she must answer this question: what key features are necessary—and how are the features used—to create the sketch of a polynomial function? what is christi's correct answer, so she receives full credit for the question? explain in complete sentences.

A polynomial equation has several variables (letters) and coefficients (numbers in it), for example: 

3x^3 + 2x^2 + 1 = 0

The significant features of a polynomial equation comprise how it behaves for x<0 and x>0, the large negative and positive values of x, and how many zeroes it has (which is how many times it crosses the x axis (y=0) and where the zeroes are). Since the degree of the polynomial is the largest exponent (which is 3 in the above equation), you'll know that there are up to 3 different zeroes.