Mount St. Helens, located in Washington, erupted on May
18, 1980. Before the eruption, the volcano was 2.95
kilometers high. After the eruption, the volcano was 2.55
kilometers high.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3