Advanced Math practice question

Answer: 3

Use any row: f(1) = a(1)² = 3, so a = 3. Check: 3(2)² = 12 and 3(3)² = 27.

Common wrong answers

If you answered 9

9 is 27/3, dividing f(3) by x instead of by x².

If you answered 12

12 is f(2); a is the multiplier, found from f(1) = a.

If you answered 1.5

1.5 comes from 3/2, dividing f(1) by x = 2; use matching x and f(x).

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