8+ (7 + 1) ^2 ÷ 4 ⋅ 1 over 2 whole to the power of 4

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

Could someone me with this question i’ve been stuck on it for 20 minutes

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas