Marking for BRAINLIEST!!!
A maximum number of 4 points are available for this question. Part A is worth 1 point. Part B is worth 1 point. Part C is worth 2 points.

Greg is shopping at a bicycle store. The store is having a sale and discounting all bicycles by 20% of the marked price. He decides to buy a bicycle with a marked price of $199.75.

Part A: Set up a proportion that can be used to find the dollar amount of the discount (d).

Part B: Given that the sales tax in Greg's state is 7%, what is the final cost of the bicycle he buys?

Part C: Greg's brother, Max, lives in a different state with a 5.5% sales tax rate. Max found the same bicycle discounted 25% from a regular price of $215.99. If Max buys the bicycle, who pays the lower total cost? Justify your answer.​