Question 244928
c = 700 + 3 * n


c = cost
n = number of persons attending.


r = 10 * n


r = revenue
n = number of persons attending.


he will break even when r = c


this makes:


10 * n = 700 + 3 * n


subtract 3 * n from both sides of this equation to get:


7 * n = 700


divide both sides of this equation by 7 to get:


n = 100


he should break even when 100 peopled attend.


cost for 100 people = 700 + 300 = 1000


revenue for 100 people = 10 * 100 = 1000


that's the break even point.