now take the square root of both sides of the equation from Part B and write the resulting equation ​

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

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.

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.