Question

A newsstand spends $600 a month on rent and electricity, and it spends $1.50 for each magazine that it sells. the newsstand charges $6 for each magazine. if n is the number of magazines, which equation represents the profit function of the newsstand?

Answer 1

For this case, the first thing we must do is define variables.
We have then:
n: number of journals.
We now write the equation for the profits.
We have then:
P (n) = (6-1.50) n - 600
Rewriting:
P (n) = 4.50n - 600
Answer:
An equation that represents the profit function of the newsstand is:
P (n) = 4.50n - 600