Answer:
35,000 units
Step-by-step explanation:
Total revenue is:

The maximum revenue is attained at the production level for which the derivate of the revenue function is zero:

Since production cannot be negative, revenue will be at a maximum when x = 35, or when the production level is 35,000 units.
 
        
             
        
        
        
I think it is 15 hours If you wrote better I could've explained better but if that cost $5 per 5 Hour that means you spend $1 per 1 hour so if you spend $15 that mean you used bike for 15 hours
        
                    
             
        
        
        
Answer:
38.5
Step-by-step explanation:
7/2 = 3.5. 11×3.5= 38.5