Answer the following questions based on the accompanying diagram:

The horizontal axis labeled quantity, ranges from 0 to 7 in increments of 1. The vertical axis labeled price in dollars, ranges from 0 to 20 in increments of 2. A line labeled D enters the quadrant through the point (0, 14) goes down to the right and exits the bottom right of the quadrant through the point (0, 7).

a. How much would the firms revenue change if it lowered price from $12 to $10? Is demand elastic or inelastic in this range?

Revenue change: $ ?

b. How much would the firms revenue change if it lowered price from $4 to $2? Is demand elastic or inelastic in this range?

Revenue change: $ ?

c. What price maximizes the firms total revenues? What is the elasticity of demand at this point on the demand curve?

Price that maximizes total revenues: $ ?