For the given cost function C(x) = 72900 + 300x + x- find: a) The cost at the production level 1650 76500 b) The marginal cost at the production level 1650At a time t seconds after it is thrown up in the air, a tomato is at a height (in meters) of f(t) = -4.9t- + 35t + 2 m. Enter all answers in text mode. (Click on answer box, then click on "It" at the lower right, then enter your answer.) A. What is the average velocity of the tomato during the first 3 seconds? (Include units.) B. Find (exactly) the instantaneous velocity of the tomato at t = 3. (Include units.) C. What is the acceleration at t = 3? (Include units.) D. How high does the tomato go? (Include units. ) E. How long is the tomato in the air? (Include units.)A particle moves along the x-axis, its position given [15" I\") = t :3 D, where t IS measured in SECONDS and 1' in meters. 1 + t2 ' (a) Find the acceleration at time t. (b) When is the particle speeding Lip? (c) When is the particle slowing down? (a) alt) = |:| (b) I:I I:I The total revenue and total cost functions for the production and sale of a TV's are given as R(x) = 190x - 0.4x2 and C(x) = 3030 + 231. (A) Find the value of a where the graph of R(x) has a horizontal tangent line. z values is (B) Find the profit function in terms of c. P(x) = (C) Find the value of a where the graph of P(@) has a horizontal tangent line. r values = (D) List all the x values of the break-even point(S). If there are no break-even points, enter "NONE". List of values =