Question

What is the value of f(3) in the function f(x)=5/6x+8

Answer 1

For this case we have a function of the form $y = f (x)$, where $f (x) = \frac {5} {6} x + 8$

We must find the value of the function when $x = 3$, that is, we must find f (3). So:

$f (3) = \frac {5} {6} (3) + 8\\f (3) = \frac {15} {6} +8\\f (3) = \frac {5} {2} +8\\f (3) = 2.5 + 8\\f (3) = 10.5$

So$f (3) = 10.5$

Answer:

$f (3) = 10.5$