Use a sign chart to solve the inequality. Express the solution in inequality notation and in interval notation. x3 The solution expressed in inequality notation is The solution expressed in interval notation is D. Use the four-step process to find f'(x) and then find f'(1), f'(2), and f'(3). f(x) = -x2 +5x - 3 f' (x) =] f'(1) = (Type an integer or a simplified fraction.) f'(2) = (Type an integer or a simplified fraction.) f'(3) = (Type an integer or a simplified fraction.)\f1 _ 380 For a company that manufactures tennis rackets, the average cost per racket is found to be C = T + 9 + Xx for x21' where x is the number of rackets produced per hour. Use the differential to approximate the change in average cost per racket if production is (A) increased from 10 per hour to 15 per hour and (B) increased from 40 per hour to 45 per hour. (A) If production is increased from 10 per hour to 15 per hour the average cost per racket will |:| by approximately $ per racket (B) If production is increased from 40 per hour to 45 per hour the average cost per racket will |:| by approximately $ per racket Factor. 5v22 By E) Select the correct choice below and, if necessary, ll in the answer box to complete your choice. C) A. 5V2 2 9v: (Type your answer in factored formt Simplify your answer') C) B. The trinomial is not factorable