12. Use the following sequence to answer the questions. \( 128,32,8 , \ldots \)
a. Write an explicit formula to represent the geometric sequence
12. Use the following sequence to answer the questions. \( 128,32,8 , \ldots \)
a. Write an explicit formula to represent the geometric sequence
\(a_n= 128\times(\frac{1}{4} )^{n- 1}\)