Online Final Exam Solee the group of aquations andi s. Select he correct answer
ID: 3117442 • Letter: O
Question
Online Final Exam Solee the group of aquations andi s. Select he correct answer below and, "necessary,in the anner borto eomplete your choic A. The solution set is a set of numbers. ( O B. The solution sot is the interval C. The solution set (Simglity your answer. Type an integer or a traction. Uon a comms to soparate acawers as needed ) (Type your answer in interval notation Type integers or fractions) b. Select the comect answer below and, if necessary, fillin the anawer box to complate your choice The solution set is a set of numbers. (Simplity your answer Type an integer or a fraction Use a comma to separate anawers as needed) a O B. The solution set is the interval (Type your ansiver in interval notation. Type integers or fractions ) Click to select and enter your answerts)Explanation / Answer
a) | x -4| = 7
(x-4) >0 ; x-4 = 7 ; x = 11
(x-4)<0 ; -(x -4) = 7 ; x = - 3
Option A : { -3 , 11}
b) | x -4|>= 7
(x -4) >0 ; x - 4 >=7
x>= 11
(x -4) <0 ; -(x -4) <=7 ;
x -4 >= -7 ; x >=-3
So, solution would be : [11, inf) ; Option B
c) | x -4| <= 7
x -4 >0 ; x -4 <= 7 ; x <= 11
x -4 <0 ; -(x -4) < =7
x>= -3
[ -3 , 11] Option B
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