How do i find the answer of 4x^2÷2x^1/2

Which of the functions graphed below has a removable discontinuity?

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.

8.74 rounded to the nearest whole number