I was confused at first until I realized that you'd shared not one, not two, but three questions in one post.  would you please post just one question at a time to avoid this.
I'll focus on your second question only:  Solve <span>3 + |2x - 4| = 15.
Subtr. 3 from both sides.  Result:  |2x - 4| = 12
Divide all terms by 2, to reduce:    |x - 2| = 6
Case 1:  x-2 is already +, so we don't need |    |:
                       x - 2 = 6    =>   x = 8 (first answer)
Case 2:  x-2 is negative, so |2x-4| = -(2x-4) = 6
             Then   -2x + 8 = 6.  Subtr. 8 from both sides:   -2x = -2
               Div both sides by -2:  x = 1 (second answer)
Be sure to check these results by subst. them into the original equation.
Please post your other questions separately.  Thanks and good luck!
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Answer:
I'm pretty sure it's 12.55
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
4
Step-by-step explanation:
that is the intercept of the line to y
 
        
                    
             
        
        
        
Answer:
20260275
Step-by-step explanation:
the question is same as selecting 4 things from 150 things
= C(150,4). (nCr formula)
=[150×149×148×147]÷[4×3×2×1]
= 49×75×149×37
= 20260275 
 
        
             
        
        
        
Answer:
 Two statement forms are called logically equivalent if they have identical truth values for each possible substitution for their statement variables.
Step-by-step explanation:
hope this helps <333
brainliest plz :) ?