Homework t(2)

Question 11

The demand x is the number of items that can be sold at a price of $p. For x = p3 - 7p + 1000, nd the rate of change of p with respect to x by differentiating implicitly. (... The rate of change of the price p with respect to the demand x is :l. An investor bought stock for $20,000. Five years later, the stock was sold for $40,000. If interest is compounded continuously, what annual nominal rate of interest did the original $20,000 investment earn? The annual nominal rate of interest earned is %. (Round to two decimal places as needed.) Use the price-demand equation below to find E(p), the elasticity of demand. x =f(p) = 7200 - 6p2 E(p) =Use the price-demand equation below to determine whether demand is elastic, is inelastic, or has unit elasticity at the indicated values of p. x = f(p) = 190 -5p - 0.3p (A) p = 5 (B) p = 10 (C) p = 15 (A) Describe the demand's elasticity for the given price-demand equation at p = 5. Choose the correct answer below. O Inelastic O Elastic O Unit Elastic (B) Describe the demand's elasticity for the given price-demand equation at p = 10. Choose the correct answer below. O Inelastic O Unit Elastic O Elastic (C) Describe the demand's elasticity for the given price-demand equation at p = 15. Choose the correct answer below. O Unit Elastic O Elastic O Inelastic