Error Analysis Jason defined the following step function.
\(f ( x ) = \left\{ \begin{array} { l l } { 5 , } & { 0 \leq x \leq 10 } \\ { 6 , } & { 10 \leq x \leq 20 } \\ { 7 , } & { 20 \leq x \leq 30 } \end{array} \right.\)
What is the error that Jason made?