Answer
$floor(\frac{17}{4})=floor(4.25)=4$
$ceiling(\frac{17}{4})=ceiling(4.25)=5$
Work Step by Step
By definition, $floor(x)$ is the largest integer less than or equal to $x$, and $ceiling(x)$ is the smallest integer greater than or equal to $x$. Note that $\frac{17}{4}=4.25$. Hence, we "fall to the floor" of $4.25$ to get $4$, and "rise to the ceiling" of $4.25$ to get $5$.