Answer:
0.2x+3
Step-by-step explanation:
You answer is D. Not including set-up costs, Jerry's T-shirts charges less for each T-shirt printed than Shirts Unlimited.
18%=0.18
380×0.18=68.4 increase
380+68.4=448.4
the easier way is to think 1 times any number is the same number so 380(1+0.18)=448.4 (just like adding tax to the price of something to see how much you'll actually pay)