Answer:
Total Revenue of Cocaine will increase. 
Step-by-step explanation:
Elasticity of demand is demand responsiveness to price change. 
Price & Total Revenue have relationships as per Elasticity of Demand : 
- Elastic Demand >1 : Change in quantity demanded > change in price ; Price & Total Revenue negatively related. 
- Inelastic Demand < 1 : Change in quantity demanded < price change ; Price & Total Revenue positively related 
Given : Demand for crack cocaine is inelastic. If government increases penalties on cocaine supply, number of dealers decrease. 
Then , the supply of cocaine will fall. Supply Shortage will increase the price. However - because demand is inelastic , total revenue will increase as a result of price rise.