I need some help with these questions and can you please show me all the steps? (A) If a piece of machinery depreciates at an annual rate of 5.85%, how many years will it take for the machinery’s value to reduce to a quarter of its original value? (B) A cafe finds that the demand equation for its new coffee blend product is given by: Q= 28/p0.85, Where P is the price per cup and Q is the number of cups served per hour. Find the elasticity of demand, Ed. (C) Find the effective annual rate for an interest rate of 8.5% p.a. compounded monthly. Answer as a percentage to 2 decimals

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
Author:NEWNAN
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Chapter1: Making Economics Decisions
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I need some help with these questions and can you please show me all the steps?

(A) If a piece of machinery depreciates at an annual rate of 5.85%, how many years will it take for the machinery’s value to reduce to a quarter of its original value?

(B) A cafe finds that the demand equation for its new coffee blend product is given by: Q= 28/p0.85, Where P is the price per cup and Q is the number of cups served per hour. Find the elasticity of demand, Ed.

(C) Find the effective annual rate for an interest rate of 8.5% p.a. compounded monthly. Answer as a percentage to 2 decimals

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