Hiromi sells 12 t-shirts each week at a price of $13.00. past sales have shown that for every $0.25 decrease in price, 4 more t-shirts are sold. knowing that revenue is a product of price and quantity, hiromi models his revenue by r(x) = (13 - 0.25x)(12 + 4x), where x represents the number of times there is a reduction in price.

question: what is the maximum revenue hiromi can generate each week? show work.