Devorah is filling a pool with a hose. The volume, $H$, in liters, of water coming out of the hose in $m$ minutes is given by the function $H(m)=17.4m$. However, it is a sunny day, and water is also evaporating from the pool. Therefore, the volume, $V$, in liters, of water in the pool $m$ minutes after Devorah started filling it is given by $V(m)=17m$.
Let $E$ be the volume of water, in liters, that has evaporated from the pool $m$ minutes after Devorah started filling it.
**Write a formula for $E(m)$ in terms of $H(m)$ and $V(m)$.**
$\qquad E(m)=$ [[☃ expression 3]]
**Write a formula for $E(m)$ in terms of $m$.**
$\qquad E(m)= $ [[☃ expression 4]]