NEED HELP ASAP WITH PROBLEMS (SCREENSHOTS) 11 THROUGH 15! PLEASE NUMBER THEM AS I HAVE SO I CAN FOLLOW EASILY. THANK YOU SO MUCH!!!!

11 An outboard motor has an initial price of $4.050. Aservice oontract costs $350 for the rst year and increases $100 per year thereaer. The total cost of the outboard motor (in dollars) after n years is given by C(n) = 4,050 + 300n + 50n2, where n 2 1. Complete parts (A) through (C). (A) Write an expression for the average cost per year, C(n), for n years. 6(n) = (B) Graph the average cost function found in part (A). Choose the correct graph below. 0 A. O B. O c. O D. y V0; _ 4,50 4.50 Y 4.50 4.500 (C) When is the average cost per year minimum? (This time is frequently referred to as the replacement time for this piece of equipment.) The average cost per year is minimum aer years. Click to select your answer(s). C) Time Remaining: 02:19:14 m 12 49 Find the absolute maximum and minimum, if either exists, for f(x) = x + 7. Select the correct choice below and, if necessary, ll in the answer boxes to complete your choice: O A. The absolute maximum is at x = O B. There is no absolute maximum. Select the correct choice below and, if necessary. ll in the answer boxes to complete your choice. O A. The absolute minimum is atx= O B. There is no absolute minimum, Click to select and enter your answer(s). Time Remaining: 02:18:37 m 13 Find the dimensions of a rectangle with an area of 144 square feel that has the minimum perimeter. The dimensions of this rectangle are E. (Simplify your answer. Use a comma to separale answers as needed.) Enter your answer in the answer box. Time Remaining: 02:18:08 m 14 Afenoe is to be built to enclose a rectangular area of 800 square feet. The fence along three sides is to be made of material that costs $5 per foot. The material for the fourth side costs $15 per foot. Find the dimensions of the rectangle that will allow for the most eoonomical fence to be built. The short side is '1 ft and the long side is [I fL Enter your answer in each of the answer boxes. Time Remaining: 02:17:40 m 15 Find the following indefinite integral. x - 6 dx . . . . . X5 x dx = - 5 + C Enter your answer in the answer box. Time Remaining: 02:02:21 Next