-0.2 is not a possible value of x because lengths cannot be negative.
To complete the square, you would add to both sides (8/2)^2 = (4)^2 = 16. So, the correct answer would be D.
<span>Price of the adult ticket is equal to the price of the child's ticket plus 3.75 or x+3.75</span>
Step-by-step explanation:
hope you can understand