Answer:
The cost of 1 burger is $60 (600 ÷ 10)
The cost of 15 burgers is 900 (15 x 60)
 
        
                    
             
        
        
        
Answer:
4
Step-by-step explanation:
 
        
             
        
        
        
<h3>
Answer is  8:30 </h3>
Work Shown:
time = distance/speed
time = (1.5 miles)/(3 mph)
time = (1.5/3) hours
time = 0.5 hours
time = 30 minutes
It takes 30 minutes to walk to school, so you should leave a half hour before 9:00. Subtracting 30 minutes from 9:00 gets you to 8:30. If anything, you should start a little bit before 8:30 just in case something might slow you down for one reason or another.