I have struggle answering this question

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

Can someone me with this problem i don't understand i need

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.