Answer:
-x-7
Step-by-step explanation:
(-2x+4)+(x-11)
-2x+4+x-11
-x-7
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   f^-1(x) = (x +4)/3
Step-by-step explanation:
The inverse function is found by swapping x and y, then solving for y.
   y = 3x -4 . . . . . function y = f(x)
   x = 3y -4 . . . . . inverse relation
   x +4 = 3y . . . . add 4
   (x +4)/3 = y . . . divide by 3. This is the inverse function
   f^-1(x) = (x +4)/3
 
        
             
        
        
        
Answer: B. 3x + 1/5
tom's pencil is longer than Ellen's pencil: 
5x + 2/5 - (2x + 1/5) = 5x - 2x + 2/5 - 1/5 = 3x + 1/5 (cm)
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
1. 60 F 2. -6 F
Step-by-step explanation:
simple math
 
        
             
        
        
        
Answer:
   15 inches
Step-by-step explanation:
The perimeter of a polygon is the sum of the lengths of its sides. A square has 4 sides, all the same length. We can either add up the side lengths, or we can recognize that multiplication of one side's length by 4 is a useful alternative.
   perimeter = 4 × (3 3/4 in)
   = (4×3 +4×3/4) in
   = 12 in + 3 in = 15 in