Can someone please help

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.

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

Abcd is a square. what is the measure of angle bac