Question

considere a função: f(x) = log de base 8 (x+3)³. O valor de f(5) é:
a- 3
b- 5
c- 8
d- 11
e- 13

pfv me ajudem!

Answer 1

$\large\boxed{\begin{array}{l}\sf f(x)=\ell og_8(x+3)^3\\\sf f(5)=\ell og_8(5+3)^3\\\sf f(5)=\ell og_88^3\\\sf f(5)=3\ell og_88\\\sf f(5)=3\cdot1\\\sf f(5)=3\\\huge\boxed{\boxed{\boxed{\boxed{\sf\red{\maltese}~\blue{alternativa~a} }}}}\end{array}}$