Why did the picture go to jail (big ideas math puzzle time, red book, common core)?

What is the value of x in the figure below? if necessary, round your answer to the nearest tenth of a unit. 12 d 4 b оа. 3.1 ов. 6.9 ос. 4 od. 12

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

16x^2-16x=5 solve the equation by completing the square