Question

f(x)=2x+1 sobre 3 determine a imagem para domínio 10

Answer 1

$\Large\boxed{\begin{array}{l}\sf f(x)=\dfrac{2x+1}{3}\\\\\sf para\,x=10~temos:\\\sf f(10)=\dfrac{2\cdot10+1}{3}=\\\\\sf f(10)=\dfrac{20+1}{3}\\\\\sf f (10)=\dfrac{21}{3}\\\\\sf f(10)=7\checkmark\end{array}}$