Nina makes and sells necklaces. For n necklaces, her revenue function is r(n) = 11.75n and her cost function is c(n) = 8.9 + 1.2n.
Which function is Nina’s profit function?

p(n) = 10.55n – 8.9
p(n) = 12.95n – 8.9
p(n) = 12.95n + 8.9
p(n) = 14.1n + 8.9

Question

Nina makes and sells necklaces. For n necklaces, her revenue function is r(n) = 11.75n and her cost function is c(n) = 8.9 + 1.2n.
Which function is Nina’s profit function?

       p(n) = 10.55n – 8.9 
       p(n) = 12.95n – 8.9
       p(n) = 12.95n + 8.9
       p(n) = 14.1n + 8.9

dumbcow · Answer

profit = revenue - cost

anonymous · Answer

@dumbcow I'm still confused. @sammixboo @wio can you guys help please?

jingle535 · Answer

Crazy to figure out which one is the profit function you need to subtract the cost function c(n) = 8.9 + 1.2n by the revenue function  r(n) = 11.75n . So  r(n) = 11.75n - c(n) = 8.9 + 1.2n is...

anonymous · Answer

$$
p(n) = r(n)-c(n) = (11.75n )- (8.9 + 1.2n)
$$

jademc01 · Answer

p(n) = 10.55n – 8.9