$5$

Write the domain in interval notation.

$($a$)a(x)=\sqrt[\phantom{2}]{x25}$

$($b$)b(x)=\sqrt[\phantom{2}]{25-x}$

$($c$)c(x)=\frac{1}{\sqrt[\phantom{2}]{x25}}$

Part $1$ of $3$

$($a$)a(x)=\sqrt[\phantom{2}]{x25}$

The domain in interval notation is $$

$$U$$

$(,]$

$-$

Part $2$ of $3$

$($b$)b(x)=\sqrt[\phantom{2}]{25-x}$