# How do you evaluate the function f(x)=3/5x+4 for f(5))?

Apr 6, 2018

$7$

#### Explanation:

$f \left(5\right)$ just means $x = 5$. So wherever we see an $x$, replace it with a $5$. Doing this, we get:

$f \left(5\right) = \frac{3}{5} \left(5\right) + 4$

$f \left(5\right) = \frac{3}{\cancel{5}} \cancel{5} + 4$

The 5s cancel out, and we're left with

$3 + 4$, which is obviously $7$.

Hope this helps!