How do u find the rule of this problem

1. are the triangles similar and if so why? what is the value of x? show your work.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.