+0  
 
0
78
1
avatar

Let

f(x) = 4x + 1 if x <=3

f(x) = 18 - 4x if x > 3

Find the sum of all values of x such that f(x) = 0.

 Jun 18, 2021
 #1
avatar+35061 
+1

Set the pieces = 0 to see if they qualify

4x+1 = 0

  x = -1/4           this piece was for x <= 3    so   x = -1/4    is one answer

 

18-4x = 0

  x = 4 1/2          this piece was for x > 3       so   x = 4 1/2 is another answer     

                                -1/4 + 4 1/2 = __________ 

 Jun 18, 2021

29 Online Users

avatar