I thinks it's D, due to the process elimination
<span>find the range. [15(35)]+[12(60)] and this will be your high end. now do it again but at the low end [15(20)]+[12(30)] and this will be your low end. now you have the max amount the price would be and the lowest amount of the price. now look at your answers and see what is within that range and what isn't and there's your answer.</span>
You answer is D. Not including set-up costs, Jerry's T-shirts charges less for each T-shirt printed than Shirts Unlimited.