Angie and Buddy problem for Calculus BC?

so i need help with this problem for Calculus it is more speciffically an IB problem and this is the second problem, i have no clue on how to get started and if you are/were an IB kid i was wondering if you could help me get started on this.... the email is ulisesverdin@hotmail.com in case you have it and are willing to send it to me thank you