Which is the graph of arctan(x)?

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Which equation represents the function on the graph?