Answer:
x=(p+30)/10.50, where x is the amount of haircuts and p is the profit.
tep-by-step explanation:
From the information given, you know that Marcella's profit would be equal to the price per haircut for the number of haircuts minus the amount to rent a station at the salon per day, which would be:
p=10.50x-30, where p is the profit and x is the amount of haircuts
You can solve for x to find the equation that represents the amount of haircuts she must give in one day to make $138 after paying rent for her station:
p+30=10.50x
x=(p+30)/10.50
The equation is x=(p+30)/10.50 and you can replace p with 138 to find the amount of haircuts needed.