- #1

hallie

- 4

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Use the price-demand equation below to find E(p), the elasticity of demand.

x=f(p)=20,000-550p

I know that E(p)=pf'(p)/f(p), so in this problem that would get me E(p)=p(-550)/20,000-550p, but after that, I am unsure of how to divide the equation in order to simplify it.

I know the answer is E(p)=11p-/400-11p, but if anyone could tell me how to divide/simplify the equation in order to get to that answer, I would be extremely grateful.

Thank you!