[tex]y=10(\frac{1}{5})^x[/tex]
Given an exponential function
[tex]\begin{gathered} y=ab^x \\ \text{ wh}ere\text{ a and b are constants} \\ \text{then a is the coefficient} \\ \text{and b is the base} \end{gathered}[/tex]
Therefore,
10 is the coefficient and 1/5 is the base
