<span>If two parallel planes are cut by a third plane, then the lines of intersection are parallel and cannot intersect one another.</span>
        
                    
             
        
        
        
Answer:
y= -2x-3
Step-by-step explanation:
this is because the y intercept is at negative 3 and the rise over run is down 1 over 2
 
        
             
        
        
        
Answer:
60 ft, 7.5 ft 67.5 ft
Step-by-step explanation:
1. 5*12=60 ft
2 5*3=15 15/2=7.5 ft
3 60+7.5=67.5 ft
 
        
             
        
        
        
Answer: 18.125 lbs
Explanation: The baby weighed 18.125 pounds at the end of eight months. 
The baby weighed 7.25 lbs at birth. Eight months later, he weighed 2.5 or 2½ times its birth weight. Multiply 7.25 by 2.5  (which equals 18.125).
So now eight months later, he's 18.125 pounds.