Find the surface area of the regular pyramid. I need help plz.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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.

What is x3+3x2−16x−48 divided by x−1?