Question 28In the table shown, the formula relating $x$ and $y$ is: $x$ $1$ $2$ $3$ $4$ $5$ $y$ $3$ $7$ $13$ $21$ $31$$y=4x-1$$y=x^3-x^2+x+2$$y=x^2+x+1$$y=(x^2+x+1)(x-1)$None of these