PLEASE HELP ME WITH THIS I HAVE BEEN ON THIS QUESTION FOR SO LONG

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

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.