Question: 4. The demand function for a commodity is p =- 14.75 1+0.01x -, x20 where p is the price per unit and x is the

4. The demand function for a commodity is p =-
4. The demand function for a commodity is p =- 14.75 1+0.01x -, x20 where p is the price per unit and x is the number of units sold. a) Write x as a function of p. b) Find the number of units sold when the price is $10. 5. The weekly cost C of producing x units in a manufacturing process is given by C(x) = 70x+900. The number of units x produced in t hours is given by x(t) = 40t. a) Find and interpret C(x(t)). b) Determine the cost of 8 hours of production. 6. Find each of the following limits. Explain your answer. a) lim 3 x- x- 12 b) lim x - 4 2 - 1 c) lim- * + 1 1 - X

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