Differentiate implicitly to find dy/dx. x2y3 + x2y4 = 11 tate.instructure.com/courses/1874372/quizzes/6391189/history?version=1 Michael Arberman's Quiz History: Section 2.7 Review Questions -3zy -2y Arly-3x O -3zy +2y Arty+3x 3ry +2y Ary+ 3x O -3zy +2y Arly-3x O -3zy -2y Arky+3xQuestion 21 I\" 1 ms |Ethange of sales. Suppose that the price p1 in dollars. and number of sales' I, of a certain item follow the equation: 5p+4x+2px=5l1 Suppose also that p and I are both functions of time, measured in days. Find the rate at which I is changing when: I = 3. p = 5. and dpidt = 1.5 {Round to 2 decimals] Rate of Change = $ 4-13 salesiday Answer 1: -1 .13 Question 22 3 / 3 pts Rates of change of total revenue, cost, and profit. Find the rates of change of total revenue, cost, and profit with respect to time. Assume that R(x) and C(x) are in dollars. R(x) = 50x - 0.5x2 te.instructure.com/courses/1874372/quizzes/6391189/history?version=1 Michael Arberman's Quiz History: Section 2.7 Review Questions C(x) = 4x + 10 when x = 10 and dx/dt = 20 units per day. (Round to 2 decimals when necessary) R'(x) = $ 800 /day C'(x) = $ 80 /day P'(x) = $ 720 /dayQuestion 24 Rates of change of total revenue, cost, and profit. Find the rates of change of total revenue, cost, and profit with respect to time. Assume that R(x) and C(x) are in dollars. R(x) = 50x - 0.5x2 C(x) = 10x + 3 when x = 10 and dx/dt = 5 units per day. (Round to 2 decimals when necessary) tate.instructure.com/courses/1874372/quizzes/6391189/history?version=1 Michael Arberman's Quiz History: Section 2.7 Review Questions R'(x) = $ 200 /day C'(x) = $ 50 /day P'(x) = $ 150 /day