briannawood16000 briannawood16000

23-09-2020
Mathematics

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

Question 4 Given f 20 5 find x if fx 3x 4 3 19 O 11 O 12 help class=

Respuesta :

bmanduva8610 bmanduva8610

23-09-2020

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]

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