Answer:
f(5) = 11
Explanation:
F(x) = 4x - 9 for f(5)
x gets replaced with 5
f(5) = 4(5) - 9
f(5) = 20 - 9
f(5)=11
f(x)=4x-9
f(5)=4(5)-9
f(5)=20-9
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