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= 3(8x - 2) + 2
= 24x - 4
2. f(x) = 2x² - 5x
f(x + 1) = 2(x + 1)² - 5(x + 1)
= 2(x² + 2x + 1) - 5x - 5
= 2x² + 4x + 2 - 5x - 5
= 2x² - x - 3
3. (f o g)(x) = 2x² - 4x + 7
2g(x) - 3 = 2x² - 4x + 7
2g(x) = 2x² - 4x + 10
g(x) = x² - 2x + 5