Answer:
I or The first graph.
Explanation:
The sewing machine costs $135.
Each quilt made costs $11.75.
Each quilt sells for $28.50.
So let's find how many quilts need to be sold to break even.
The formula we will use to find the break even point will be:

Q = Break even quantity
P = Selling Price per unit
v = Variable cost per unit
Let's begin by substituting the values that we have into the formula.



We can see in the first graph that the line of the cost and revenue meet when there are 8 quilts sold.