y varies directly as (x+5) and f(2)=3. Set up the Equation
translates to the equation $\displaystyle y = k(x+5)$ , where $\displaystyle k$ is the constant of proportionalityy varies directly as (x+5)
use $\displaystyle f(2) = 3$ to find $\displaystyle k$ ...
$\displaystyle 3 = k(2+5)$
$\displaystyle k = \frac{3}{7}$
so, the function is $\displaystyle y = \frac{3}{7}(x+5)$