Please help, due tonight

Y = -sqrt(x-3)

the -sqrt reflects the graph over the x-axis. Then, the -3 within the sqrt will affect the graph horizontally, shifting it to the right 3 units. (Operations inside parentheses or under radicals do the opposite. That is, - means move right and + means move left, across the y- axis).

72 is the mode because it shows up the most number of times