Question

Considerando a função dada por F(x)=
$log_{5}(x + 500)$
, o valor de F (125) é? ​

Answer 1

$f(125) = log_{5}(125 + 500) \\ f(125) = log_{5}(625) \\ f(125) = log_{5}( {5}^{4} ) = 4 log_{5}(5) \\ f(125) = 4 \times 1 = 4$