Answer:
The own price elasticity is 0.28.
The demand for good a is inelastic. 
Step-by-step explanation:
The price elasticity of demand for a product is the change in the quantity demanded of a product due to a change in its price. 
When the price of good A increases by 7% the quantity demanded of that product decreases by 2%. 
The own price elasticity of demand
= 

= 

= 0.28
The elasticity of demand is less than 1, this implies that demand is inelastic. 
A greater change in price is leading to a smaller change in quantity demanded.