I need solution in full 10 points

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex