I only need the weight of the diamonds in each lot. No need for explanation (unless if you want to give one of course)

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.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.