The answer to the question is
52b - 43
We need only realize that 1(-8)(-6)=48 to see that C) is the only answer from those choices that can be an answer.
<span>Subtract 7 from both sides of the equation. Check: Substitute -4 for x in the original equation. If, after the substitution, the left side equals the right side, your answer is correct. ( -4 ) + 7 = 3 </span>
Write 
in terms of the unit step function 
:
where
Then the Laplace transform of , denoted 
, is
