801 rounded to the nearest ten would be 811
        
                    
             
        
        
        
I think that the best answer is A
        
             
        
        
        
Answer:
3t-9 >= 0
Step-by-step explanation:
Original function f(t)= square root 3t-9
There cannot be a negative in the radicand therefore 3t-9 cannot equal a negative number.  
 
        
                    
             
        
        
        
-- 30 miles per hour
-- $6.50 per hour
-- 365 days per year
-- 60 seconds per minute 
-- $2.49 per pound
-- 3.47⁹ per gallon
-- 1800 calories per day
-- 360 degrees per revolution