There are 129 people signed up to go whitewater ràfting . each raft hold 6 passengers

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.

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

How can i differentiate this equation?