Please answer ASAP, My last question!!!! 35 POINTS AND BRAINLIEST!!!!!

Predict the cost of a meal for a family of four between $50.00 and $100.00. Be sure to include dollars and cents. Part A: If the family has a 15%-off coupon, calculate the new price of the meal. Show all work or explain your steps. (2 points) Part B: Calculate a 20% tip using the new price. What is the final cost of the meal? Show all work or explain your steps. (2 points)