# Thread: Functions and Graphs !

1. ## Functions and Graphs !

Self adhesive label packs are produced with a cost function, C= 3n = 20 dollars and a revenue function, R= 5n + 10 dollars and n is the number of packs produced.
a) determine the 'break even' production number. check your answer algebraically.

b) How many self adhesive label packs should be produced to make a profit of $100? 2. First off all, I think there is a mistyping. It should be C= 3n + 20 Anyways you can simply take this approach. 1) For break even C = R. i.e 3n + 20 = 5n + 10 Solve for n. n = 5 2) for profit of$100]
R - C = 100
(5n + 10) - (3n + 20) = 100
Solve for n
n = 55

Feel free to ask if you have any further doubts.