Step-by-step explanation:
1) 15/60 = 3/12 = 1/4
2) 8/36 = 4/23
 
        
             
        
        
        
Answer:
B)  12.5 ft
Step-by-step explanation:
set up a proportion of inches/feet equals inches/feet
let 'h' = height of sign
5.4/18 = 3.75/h
cross-multiply:
5.4h = 67.5
h = 12.5
 
        
             
        
        
        
Answer:
y= x-4
Step-by-step explanation:
Since we have a point, and the slope, we can use the point slope formula 

m is the slope, y1 is the y coordinate of the point and x1 is the x coordinate of the point. 
We know that m is 1, y1 is 1, and x1 is 5, so we can substitute them in 
y-1=1(x-5) 
Solve for y by isolating it 
Distribute the 1 
y-1=1*x+ 1*-5 
y-1=x-5 
Add 1 to both sides 
y=x-4
 
        
                    
             
        
        
        
Are you able to expand everything first? from there you would be able to combine line terms. basically if you have 3x+2x it would combine to 5x because they have x in them.
        
                    
             
        
        
        
Answer:
X= 7  I'm sure
Step-by-step explanation:
If you want me to expand on the equation leave me a comment :)