How do you find the missing value?

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

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.

Find the value of x for which line a is parallel to line b