Answer:
x = 7
Step-by-step explanation:
Assuming the quadrilateral is a parallelogram, then the diagonals bisect each other.
7x - 8 = 41
7x = 49
x = 7
2.0612439*10^7 should be your answer
The parabola has a minimum value of -3 due to the subtraction at the end of the equation.
I could be 7- or it could be just 7