Question 4
Given f (20) = 5, find x if f(x) = -3x – 4
-3
-19
O 11
O 12
help

Answer:
-19
Step-by-step explanation:
[tex]f(x) = 5 , f(x) = -3x-4[/tex]
We just have to plug in 5 into f(x) and solve for y
[tex]f(5) = -3(5) - 4 \\f(5) = -15 - 4 \\f(5) = -19[/tex]