Can someone please help me with this questio? im begging

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.

Which expression shows the sum of the polynomials with like terms grouped together

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2