Final answer:
Abby would need to perform 100 haircuts a month for the cost of working at The Yardley Salon or the franchise to be the same, and she would pay $700 at each place.
Step-by-step explanation:
Abby is weighing her options between self-employment and working for a franchise. To determine when the amount she pays to either salon would be the same, we need to set up an equation where the total cost at The Yardley Salon (fixed rate) equals the total cost at the franchise (variable rate).
Let's denote the number of haircuts per month by x. At The Yardley Salon, Abby's monthly cost would be a fixed $700, and at the franchise, it would be $7 per haircut.
Thus, the equation is 700 = 7x.
Solving for x, we get:
x = 700 / 7
x = 100 haircuts
Therefore, Abby would need to perform 100 haircuts a month for the cost to be the same at both places, which amounts to $700.