What is a reasonable product of 3 9/10× 4 1/5?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Ihonestly have no clue if it's each or none.

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