URGENT HELP! THANK YOU! PLEASE INCLUDE ALL STEPS PLEASE! THANK YOU

NOTE: SHOW ALL STEPS Mark the dog is upset that Jordan doesn't give him enough treats and has wrote a book to teach other dog owners "How to Give More Treats". Leaving the details to Jordan to sell the book, they found market research that if they charge $20 per book, they can educate a total of 120 dog owners. Mark the dog's accountant, Beary Styles with the Good Squeaker, has informed Jordan the dog that for every $2.50 increase in book price, 4 less dog owners will want to buy and read his amazing book. Mark the dog let Jordan know his "beary" good findings. Q1A.) Determine the marginal revenue if they charge $50 per book. Mark the dog and Jordan will incur the following costs for printing their book: $550 paid to artists to publish artwork for the book and $15 per book to cover printing, binding, and selling of Mark the dogs treat-worthy book. Q1B.) What is the maximum profit they can achieve? (Mark the dog wants to buy an automatic treat dispenser)