In a local hardware store, the price of the store brand indoor house paint is $18 per gallon. The daily volume of sales is 30 gallons. The price…

In a local hardware store, the price of the store brand indoor house paint is $18 per gallon. The daily volume of sales is 30 gallons. The price elasticity of demand for the paint is -3. Determine the demand equation for the paint assuming that it is linear