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le Section HW-10-Chain-Rule Section 2.5: Problem 13 Previous Problem List Next (1 point) A total-cost function is given by C(z) = 1500(x2 + 1) 1/3 + 800 ns where C() is the total cost, in thousands of dollars, for the production of a airplanes. Find the rate at which the total cost is changing when 26 airplanes have been sold. dollars per airplane. Round to two decimal places. Rule Section HW-10-Chain-Rule Section 2.5: Problem 7 Previous Problem List Next (1 point) Find the equation of the tangent line to the graph of y(x) = 12(x - 1 ) at x = 2. lems Equation of the tangent line is y = Round your constants to 3 decimal places if needed. Preview My Answers Submit Answers You have attempted this problem 0 times. You have 6 attempts remaining. Email instructor HW-10-Chain-Rule Section 2.5: Problem 12 Previous Problem List Next (1 point) A total-revenue function is given by R(x) = 1400 Vx2 - 0.4. where R(x) is the total revenue, in thousands of dollars, from the sale of a airplanes. Find the rate at which the total revenue is changing when 29 airplanes have been sold. # dollars per airplane. Round to two decimal places