Answer:
2x+3y= 1500
Step-by-step explanation:
 
        
             
        
        
        
Answer:
c (2,0) and (-2,0) I hope ot helps
 
        
             
        
        
        
Answer:
2nd
Step-by-step explanation:
 
        
                    
             
        
        
        
Tetrahedron has 4 faces so it's a pyramid, dodecahedron is 12 faces, octahedron is 8 faces, icosahedron has 20 faces. Easiest way I know to classify them
        
                    
             
        
        
        
110x4=440 beats in 4 minutes