## Algebra 2 (1st Edition)

$63$
The first discount can be modeled by $f(x)=x-15$. The second discount can be modeled by $g(x)=0.9x$. Here the first one is applied first, and $x=85$; hence we are looking for: $g(f(85))=g(85-15)=g(70)=0.9(70)=63.$