What are the first three of a sequenced the nth term is -7n-1

In the triangles, bc =de and ac fe. if the mzc is greater than the mze, then ab isdfelth

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking:

Use the distributive property -7(-2x+u-2)