I need help with this and the chart that goes with it.

1. Last week, Cal sold an average of 4,000 gallons per day at an average price of $2.658 per gallon. This week, he raised the average price to $2.758 per gallon. His station is now selling an average of 3,600 gallons per day.Fixed costs of operating the gas station are $438 per day.

What is the price elasticity of demand?

Can the demand be characterized as price elastic, price inelastic, or neither?

By how much did revenues increase or decrease as a result of the change in price?

By how much did profits increase or decline? (Profit is revenue minus total cost.)