kindly assist in helping with the below questions , kindly provide graphs where necessary for better explanation.

3. The demand schedule for wax candles is as shown below. What is the price elasticity of demand between $3 and $4? Assume the manager has been charging $3.00. Make the case for keeping that price or changing the price to $4.00. If you choose to change, demonstrate the businessman's unfailing proof that the change is appropriate. Px Qx $5.00 600 4.00 700 3.00 800 2.00 900 1.00 1,000 2. Playing marbles became exceedingly popular after a $2.00 price bag fell by a $0.10. making sales rise from 110 to 118 units. What was the price elasticity of the product