ASUCH () 1. Practice Math Wood pellets are a common heating fuel for small wood pellet stoves used in homes. A typical bag of wood pellets weighs 40 pounds and wood pellets typically contain 7,450 BTUs of energy per pound. A typical 18-year old using a rowing machine commonly found in a gym can produce 100 watts while rowing. Compare the energy in a 40-pound bag of wood pellets to the energy pro- duced by rowing for 1 hour. 2. Practice Graphing