In one 8-hour day, 5 barbers gave a total of 120 haircuts. The barbers gave the same number of haircuts per hour. How many haircuts did each barber give per hour?

hello! just here for points! though i wish i knew!

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this