Question

Calcule f(x)=3x+1 sendo x= ⅓ (um sobre três)

Answer 1

$f(x) = 3x + 1 \\f( \frac{1}{3} ) = 3 \times ( \frac{1}{3} ) + 1 \\ f( \frac{1}{3} ) = \frac{3}{1} \times \frac{1}{3} + 1 \\ f( \frac{1}{3} ) = 1 + 1 \\ f( \frac{1}{3} ) = 2$