What's the circumstance of a circle with a diameter of 12 ft

Based on what i know about mean, this doesn't add up.

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.

Can you divide 25 into 4 equal groups? explain why or why not.