Please help almost late:(

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.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Me d is also an option but i couldn't get it in the picture