I need help!

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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.

Charlie tosses five coins.what is the probability that all five coins will land tails up.

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20