Suppose the demand curve for tea is given by q = 40 p2, where p is the price per cup. If the price per cup is $3, then the price elasticity of demand for tea is:

The demand for organic chewing gum is given by q = D(x) = 30 - 5 x a) Find the elasticity of demand as a function of x b) Find the value of x for which E(x) = 1

The demand curve for original Iguanawoman comics is given by q = (403-p)^2/100      (0 ≤ p ≤ 403), where q is the number of copies the publisher can sell per week if it sets the price at $p. (a) Find the price elasticity of demand when the price is set at $39 per copy. (Round your answer to two decimal places.)   (b) Find the price at which the publisher should sell the books to maximize weekly revenue. (Round your answer to the nearest cent.) $ (c) What, to the nearest $1, is the maximum weekly revenue the publisher can realize from sales of Iguanawoman comics? $

If the price rises from £4 to £5 and the quantity demanded falls from 100 to 75 then the price elasticity of demand is: