Answers:
a. 0
b. 19
Step-by-step explanation:
a.
[tex]f(x) = 3x - 9, \; x = 3[/tex]
[tex]f(3) = 3*3 - 9 = 9 - 9 = 0[/tex]
b.
[tex]3x - 9 = 48[/tex]
[tex]3x = 57[/tex]
[tex]x = 19[/tex]
A, 0; B, 19
A.
Substitute in the 3 for X
F(3)= 3(3)-9
F(3)= 9-9
F(3)=0
B.
3x-9=48
+9 +9
3x=57
57/3= 19
3/3=1
19=x
I hope this helps! :D
Pls give thx and brainliest if I'm right ;)
