I have looked it up but I can not find it anywhere

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Which of the following represents the factorization of the trinomial below? x^2+7x-30