SOLUTION: I need assistance with how to do a graph showing the following. Fill it up Inc. Is 4.00 a bottle. Bottles by Bob is 3.00 a bottle with a 25.00 set up fee. The 25.00 set up fee

Algebra ->  Rational-functions -> SOLUTION: I need assistance with how to do a graph showing the following. Fill it up Inc. Is 4.00 a bottle. Bottles by Bob is 3.00 a bottle with a 25.00 set up fee. The 25.00 set up fee       Log On


   

Question 1106334: I need assistance with how to do a graph showing the following. Fill it up Inc. Is 4.00 a bottle. Bottles by Bob is 3.00 a bottle with a 25.00 set up fee.
The 25.00 set up fee is what is confusing me. My equations are. 4n =c and 3n + 25 =c.
I just can't understand how to make a graph with the 25 set up fee. I have a graph for the 4.00 a bottle.
Thanks for your help
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
n, number of bottles
c, cost


Fill It Up, Inc. 4.00 money units per bottle, and no fee for setup
c=4n

Bottles by Bob 3.00 money units per bottle, and 25.00 for setup fee
c=3n%2B25


You can graph both of those on the same coordinate grid, right?


graph%28500%2C500%2C-2%2C50%2C-2%2C50%2C4x%2C3x%2B25%29
They will eventually intersect. Graph is not the best but you can calculate where they intersect.