(a) Obtain a formula for the price elasticity of demand E. E = (b) In one of the years the actual selling price was $315 per phone. What was the corresponding price elasticity of demand? (Round your answer to two decimal places. E = Interpret your answer. The demand was going ---Select--- o by about % per 1% increase in price at that price level. (c) Use your formula for E to determine the selling price that would have resulted in the largest annual revenue. $ What would have been the resulting annual revenue? (Round your answer to two decimal places.) $ billion

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
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Worldwide annual sales of smartphones over a two year period were approximately q = -5p + 3,090 million phones at a selling price of $p per phone.
(a) Obtain a formula for the price elasticity of demand E.
E =
(b) In one of the years the actual selling price was $315 per phone. What was the corresponding price elasticity of demand? (Round your answer to two decimal places.)
E =
Interpret your answer.
The demand was going
---Select---
O by about
% per 1% increase in price at that price level.
(c) Use your formula for E to determine the selling price that would have resulted in the largest annual revenue.
$
What would have been the resulting annual revenue? (Round your answer to two decimal places.)
$
billion
Transcribed Image Text:Worldwide annual sales of smartphones over a two year period were approximately q = -5p + 3,090 million phones at a selling price of $p per phone. (a) Obtain a formula for the price elasticity of demand E. E = (b) In one of the years the actual selling price was $315 per phone. What was the corresponding price elasticity of demand? (Round your answer to two decimal places.) E = Interpret your answer. The demand was going ---Select--- O by about % per 1% increase in price at that price level. (c) Use your formula for E to determine the selling price that would have resulted in the largest annual revenue. $ What would have been the resulting annual revenue? (Round your answer to two decimal places.) $ billion
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