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Let \(f(x) = 2x - 3\) and \(g(f(x)) = 5-4x.\) Find \(g(4).\)

 Jan 30, 2022
 #1
avatar+36417 
+1

First , find f(4)    then substitute THAT value into the g(x) formula ....

 Jan 30, 2022
 #2
avatar+1209 
-1

f(x) = 2x - 3 = 4

2x = 7

x = 7/2

 

g(4) = g(f(7/2)) = 5 - 4(7/2) = -9

 Jan 30, 2022

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