Let f(x) = 2x + 1 and g(x) = x^2. What is f(g(3))?
Answer and explanation
Correct answer: D. 19
- Step 1: Work from the inside: g(3) = 3^2 = 9. Step 2. Then f(9) = 2 x 9 + 1 = 19. Answer: 19. Why not the others: 49 composes the functions in the opposite order, and 16 adds instead of composing.
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