Question

Если s(y)=y/5−7,5,
то s(−2) =

Answer 1

$\large \sf s\bigg(y \bigg) = \frac{y}{5} - 7.5;\Rightarrow \\ \sf \large \: \Rightarrow \bf \: s \bigg( - 2 \bigg) = - \frac{2}{5} - 7.5 = - 0.4 - 7.5 = \boxed{ \huge \bf \: - 7.9}.$