we have the function
[tex]h(c)=\sqrt[4]{-3c+75}[/tex]Find out h(-2) ----> value of the function h(c) when the value of c=-2
so
For c=-2
substitute in the given function
[tex]\begin{gathered} h(-2)=\sqrt[4]{-3(-2)+75} \\ h(-2)=\sqrt[4]{6+75} \\ h(-2)=\sqrt[4]{81} \\ h(-2)=3 \end{gathered}[/tex]