Let $g$ be a continuous function on the closed interval $[-1,5]$. A few values of $g$ are given in this table: $x$ | $-1$ | $2$ | $4$ | $5$ :- | -: | -: | -: | -: $g(x)$ | $0$ | $4$ | $9$ | $15$ **Which intervals *must* contain a solution to $g(x)=3$ ?** [[☃ radio 1]]