Answer:
Relative responsiveness of consumer to change in price is called elasticity of demand.
Elasticity of demand here is 7.
Demand is highly elastic.
Cutting the price from $1.25 to $0.75, total revenue remains same as the elasticity of demand does not change.
Explanation:
Percentage change in quantity demanded due to percentage change in price.
Elasticity of demand=% change in quantity demanded/percentage change in price.
Small change in price caused a huge change in quantity demanded.
 
        
             
        
        
        
Answer:
B. What is the most effective allocation?
Explanation:
Economics is the social study of how society allocates its limited resources to meet the unlimited need of its members. It involves the distribution of scarce resources to various sections of the community to meet different wants. Economist's primary concern is the efficient use of the available resources to achieve maximum benefits. 
Economics will involve making decisions on the use of available resources. Economists will calculate the opportunity cost in every situation before making a decision. The purpose of finding the opportunity costs to determine the most effective ways of allocating resources. 
 
        
             
        
        
        
Answer:
$57.11
Explanation:
$25.85 × 4 = $103.40
$15.70 × 2 = $31.40
Total cost of purchase = $134.80
6% tax = 0.06 × $134.80 = $8.09
Total cost of purchase including tax = $142.89
Change received by Blaine = $200 - $142.89 = $57.11
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