It costs $0.50 to download an individual song and $4 to download an album jada has $15 to spend downloading music how many albums can jada download is she downloads 6 individual songs

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.