Which quotient is greater than 3?

42 ÷ 19
40 ÷ 18
38 ÷ 14
36 ÷ 11

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.