Enter a range of values for x, 2x+10, 14

Idon’t know how to solve this question

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

Which element would mostly likely have an electron affinity measuring closest to zero