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Verified answer
F(2x - 3) = 7x - 16f(2x - 3) = f(7)
2x - 3 = 7
2x = 3 + 7
x = 5
f(7) = 7x - 16
f(7) = 7.5 - 16
f(7) = 35 - 16
f(7) = 19