Help these are all parts of one question just find the answers for them and in your answer label it like part A part B part C part D please and thank you.
1. The 30% discount on a $49 dollhouse
2.the 20% tip on a $8 sandwich
3. the total cost of a $112.75 meal with a 20% tip
4. the price paid for a $15 shirt after a 45% discount​