@ Question 1 v & 073 pts D 100 @ Details The above is the graph of the derivative f '(x). How many critical points does the original function f(x) have? Question Help: []Video 1 (3] Video 2 Post to forum Submit Question @ Question 2 v & 0/3 pts O 100 O Details A farmer finds that if she plants 65 trees per acre, each tree will yield 40 bushels of fruit. She estimates that for each additional tree planted per acre, the yield of each tree will decrease by 4 bushels. How many trees should she plant per acre to maximize her harvest? Give your answer rounded to the nearest whole number. Question Help: (2 Video {D Post to forum Submit Question 2.7 Part 2 Progress saved Done & 0a@ Score: 15/45 Answered: 5/15 @ Question 5 v > & 0/3 pts D 100 @ Details State the interval, using interval notation, on which the function y = 22 2z +3is increasing? The function is increasing on: [: Question Help: []Video (D Post to forum Submit Question @ Question 7 v + 6z -+ 7000. Find the marginal cost at the production level of 1000 units. [: dollars/unit Question Help: (] Video [ Post to forum Submit Question @ Question 13 v