Answer:
It will take a minimum of 13 weeks before Josephine makes a profit.
Step-by-step explanation:
Let it takes w weeks for Josephine to make profit.
So, her weekly sales over 550 is shown as 550w.
And we can represent her up front and weekly costs over w weeks as:
Now, we need to know when:
Solving for w:
=>
w>12.85
Means w should be at least 13.
Hence, It will take a minimum of 13 weeks before Josephine makes a profit.