Problem 3. Returning to the carpet cleaning example: a) (In Excel, 2 points) fill in column C of Example L.6.3. with the cost for the nth job, where n is the number in Column A (hint: remember from class that the exact cost of the ath unit/job is C(a) C(a 1)).

b) The owner of the business describes their week thusly: Towards the beginning of the week, things went smoothly until one of our trucks broke down and we had to pay for a minor repair. Later in the week, the truck broke down again and needed to be sent out for repairs. A replacement truck was rented for the remainder of the week. Towards the end of the week, things got busy and I needed to pay my workers overtime for all jobs past a certain point. Question: based on this story and the per job information you found in part a), during which job do you think i) (1 point) the truck broke down the first time requiring minor repairs? ii) (1 point) the truck broke down again and needs to be replaced with a rental? (Hint: a rental fee will needed to be added to the cost of all associated jobs) iii) (1 point) the owner needed to start paying out overtime?