Which is the explicit formula for finding the nth term of a geometric sequence?

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%.

Aphrase is shown read the phrase and give me the answer

286 divided by 457.6 what is the quotient?