Answer:
x = 2
Step-by-step explanation:
 
        
             
        
        
        
t=45min
d=4km
45min/60min = 0.75 hours
v=d/t
v=4km/0.75hours
v=5.33km/hour. So the answer is B. 45 minutes.
        
             
        
        
        
<span>3 quarters and 2 pennies.3 quarters= $0.75  2 pennies= $0.02= $0.77</span>
        
             
        
        
        
Just took the test. A is the right answer. 
        
                    
             
        
        
        
15. If a+b=6 and ab=9 that means a and b must each equal 3. Then plug it into the equation and solve. (3)3+(3)2 = 15