Answer:
240
Step-by-step explanation:
 
        
                    
             
        
        
        
The roller coaster is 150 ft
        
             
        
        
        
Answer:
B
Step-by-step explanation:
B
 
        
                    
             
        
        
        
<span>9-4(2x-1)=45
Multiply -4 by 2x and -1
9-8x+4=45
Subtract 9 from both sides
-8x+4=36
Subtract 4 from both sides
-8x=32
Divide both sides by -8
Final Answer: x= -4</span>
        
             
        
        
        
Answer:
x=2 and y= -2
Step-by-step explanation:
Substitute y=x-4 in second equation
x-4=4x-10
get x terms on one side and numbers on other sides
4x-x=10-4
3x=6
divide 3 on both sides
x=2
substitute x=2 in y=x-4
y=2-4
y= -2