Use the price-demand equation p+ 0.004x = 40, 0sps40. Find the elasticity of demand when p= $15. If the $15 price is decreased by 5%, what is the approximate percentage change in demand? The elasticity of demand when p= 15 is (Type an integer or a simplified fraction.) If the price is decreased by 5%, the demand V approximately%. (Type an integer or a simplified fraction.)

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