Please answer :)

( Will give brainlst)

Me what is the value of x? showing work would be appreciated - ! : )

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.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x