The answer to your problem is 20 inches.
        
                    
             
        
        
        
First step: you got to add y to both sides in the math problem Ex: 15x - y + y  < 12 + y
Second step: simplify 15x < 12 + y 
Third Step: This you got to divide both sides by 15 like this: 15x/15 < 12/15 + y/15
Last and Fourth step:  Simplify and thats your answer  x < 12 + y/15 
 
        
             
        
        
        
<h3>f(x) = -3·2^(x-1) -1</h3>
- reflection across the x-axis (multiplication by -1)
- vertical expansion by a factor of 3 (multiplication by 3)
- shift to the right 1 unit (replace x with x-1)
- shift down 1 unit (add -1 to the function value)
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<h3>f(x) = -1/4·2^(x+1) -1</h3>
You may notice this is the same as the previous question, but with the vertical expansion factor 1/4 instead of 3, and the horizontal shift left instead of right.
- reflection across the x-axis (multiplication by -1)
- vertical compression by a factor of 4 (multiplication by 1/4)
- shift to the left 1 unit (replace x with x+1)
- shift down 1 unit (add -1 to the function value)
 
        
        
        
If two lines are parallel to one another, then their slopes are identical.  The slope in the line above is 3/4.  Therefore, a line parallel to that line will also have a slope of 3/4, it will just have a different y-intercept.