Im bored who wanna talk?

Me with this one question, and i'll upvote the brainliest answer

Which of the following is the graph of y= square root -x-3

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.