18r^2 - 24r + 42. When you want to express something as squared or with an exponent you put ^ this symbol then the number(s)
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
She will need 5 cups of milk because 1.25 times 4 equals to 5!
 
        
                    
             
        
        
        
Vertex at the origin and opening down → y=ax^2
Width: w=16
x=w/2→x=16/2→x=8
x=8, y=-16→y=ax^2→-16=a(8)^2→-16=a(64)→-16/64=a(64)/64→-1/4=a→a=-1/4
y=ax^2→y=-(1/4)x^2
7 m from the edge of the tunnel → x=w/2-7=8 m-7 m→x=1 m
x=1→y=-(1/4)x^2=-(1/4)(1)^2=-(1/4)(1)→y=-1/4
Vertical clearance: 16-1/4=16-0.25→Vertical clearance=15.75 m
Please, see the attached file.
Answer: Third option 15.75 m
 
        
        
        
You put 4 in the X
1/2(4)+5y-10<0
2+5y-10<0
-8+5y<0
5Y<8
Y<8/5
        
             
        
        
        
Answer:
correct do
Step-by-step explanation: