In part a) graph the demand schedule shown below for Energy Bars facing an individual firm. Then using the midpoint formula, complete the table by calculating E_{d} to determine the price elasticity of demand for each of the six possible $1.00 price changes (3 decimal points). Indicate if demand is inelastic, unitary (unit) or elastic in the table and on the graph.
Price per Energy Bar 
Quantity Demanded (1,000s) 
E_{d} 

Elasticity 
$1.20

7.5 



$2.20

6.5 



$3.20

5.5 



$4.20

4.5 



$5.20

3.5 



$6.20

2.5 



$7.20 
1.5 



b. Graph the Demand curve here
c. Show your calculations for E_{d }over the price change from $6.20 to $5.20.
d. At what price level(s) is will this firm maximize Total Revenue? Explain your answer.