2 {\displaystyle \sqrt{2}}
2 5 = 2 ⋅ 20 5 ⋅ 20 = 40 100 {\displaystyle \frac{2}{5}= \frac{2\cdot20}{5\cdot20}= \frac{40}{100} }
g ( x ) = 1 2 x + 17 {\displaystyle g(x)= \frac{1}{2}x+17}
