The Wilton's are filling up their pool for the first time this year. The water runs at 4.5 liters per minute. The pool already had 50 liters of water in it from the rain. The function f(x) = 4.5x + 50 represents the amount of water, f(x), that is in the pool after x minutes. The Wilton's have a pool that holds 200,000 liters. What is an appropriate Domain for this function? What does the domain represent?

Question

The Wilton's are filling up their pool for the first time this year.  The water runs at 4.5 liters per minute.  The pool already had 50 liters of water in it from the rain.  The function f(x) = 4.5x + 50 represents the amount of water, f(x), that is in the pool after x minutes.  The Wilton's have a pool that holds 200,000 liters. What is an appropriate Domain for this function?  What does the domain represent?

hoblos · Answer

the domain for the function here represents the amount of water in the pool as time (x) change, so you must find the minimum amount and the maximum amount and the domain is the range between them.
can you find the minimum and the maximum ?

anonymous · Answer

no i dont know that

hoblos · Answer

it says "The pool already had 50 liters of water" and "The Wilton's have a pool that holds 200,000 liters"

can you find them from these 2 expressions ?

anonymous · Answer

50 liters and 200,000 ?

hoblos · Answer

correct

anonymous · Answer

so do i divide those two numbers

hoblos · Answer

no, these are the borders of the domain, so the domain will be [50,200000]

anonymous · Answer

so what would be the answer