00:01
So a vendor is selling cotton candy and caramel apples for $2 each.
00:07
It costs him $100 to set up his booth, and each caramel apple or cotton candy costs him $75.
00:17
I'm going to let x equal the number of items he's producing or selling.
00:24
In a, i want a cost function.
00:27
The cost function is going to be the fixed cost of 100, the booth clause.
00:32
Plus 0 .75x.
00:38
And b, i want a revenue function.
00:40
How much money does he bring in? well, he's going to bring in $2 times the number of items he sells.
00:50
And c, i want to find break -even.
00:53
Break -even point is where your cost equals your revenue.
00:59
So i'm going to take my cost function and set that equal to my revenue function.
01:07
Subtract 0 .75x from both sides.
01:14
So i have 100 equals 1 .25x.
01:20
Divide both sides by 1 .25...