The CRUD chemical plant produces as part of its production process a noxious compound called chemical X$.$ Chemical X is highly toxic and needs to be disposed of properly. Fortunately, CRUD is linked by a pipe system to the FRESHAIR recycling plant that can safely reprocess chemical X$.$ On any give day, the CRUD plant will produce the following amount of Chemical X $($the plant operates between $9$am and $3$pm only$)$: