Is the value of the first 7 ten times as great as the value of the second 7 in 7,237?

Which expression is equivalent to the expression shown?

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.

How do i put 3(x+7) in distributive property