Question

The function we need to use answer this is h(r)= √4-r

Answer 1

Given:

$\begin{gathered} h(r)=\sqrt{4}-r............(1) \\ 3h(r)+2=4..............(2) \end{gathered}$

To find:

The value of r.

Explanation:

Using function (1) in (2),

$\begin{gathered} 3(\sqrt{4}-r)+2=4 \\ 3(2-r)=4-2 \\ 6-3r=2 \\ -3r=-4 \\ r=\frac{4}{3} \end{gathered}$

Therefore, the value of r is,

$\frac{4}{3}$

Final answer:

The value of r is,

$\frac{4}{3}$