SOLUTION: A small factory can produce 245 sofas each day. After 3 days, there are 1235 sofas in stock. How many days of production will be needed in order to fill an order for 5400 sofas?

Question 1059127: A small factory can produce 245 sofas each day. After 3 days, there are 1235 sofas in stock. How many days of production will be needed in order to fill an order for 5400 sofas?
It's confuses me because I doon't know if I have to use the form of y=mx+b.
y2-y1/x2-x1 or the
y-y1=m(x-x1)
I have several problems like this it's call real-world models using point-slope. thank you
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
They are producing sofas at a certain rate,
and rate is the slope, in a linear equation
sofas/day
----------------------------
sofas is a constant number of sofas you
start off with, but if you want to begin at day one,
subtract out sofas
is the constant term,
-------------------------------------------------
Now let = time in days to make sofas
The equation would be:

You are given

20 days are needed to make 5400 sofas
( with the 3 days included, which I think they want )
Feel free to get another opinion, too

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