Please help with 4!

QUESTION 3 A study found that the price, p, in dollars was related to x boxes of cereal sold by the equation x - 1586*p^.1.20 Calculate the elasticity of demand at a price of $12. (Round to two decimal places). QUESTION 4 Match the statements from the left column with their corresponding statements from the right column. In order to receive full credit, you should match all statements correctly. When the demand is elastic, in order to increase the revenue A. the price should be decreased. When the demand is inelastic, in order to increase the revenue B, You know you made a mistake in your calculations. When the demand is unit elastic C. the price should be increased. When the elasticity of demand is a negative number D. the profit is maximized E. the cost is maximized F. the revenue cannot be increased any further